Bi-power Relays
LY
Power-switching Compact General-purpose Relays
Ratings
Standard Models with Built-in Operation Indicators
Operating Coil, Single-pole and Double-pole Models
Item | Rated current (mA) | Coil resist- ance (Ω) | Coil inductance (H) | Must- operate voltage (V) | Must- release voltage (V) | Maximum voltage (V) | Power con- sumption (VA, W) | |||
Rated voltage (V) | 50 Hz | 60Hz | Armature OFF | Armature ON | ||||||
AC | 12 | 106.5 | 91 | 46 | 0.17 | 0.33 | 80% max. *1 | 30% min. *2 | 110% of rated voltage | Approx. 1.0 to 1.2 (at 60 Hz) |
24 | 53.8 | 46 | 180 | 0.69 | 1.3 | |||||
50 | 25.7 | 22 | 788 | 3.22 | 5.66 | |||||
100/110 | 11.7/12.9 | 10/11 | 3,750 | 14.54 | 24.6 | Approx. 0.9 to 1.1 (at 60 Hz) | ||||
110/120 | 9.9/10.8 | 8.4/9.2 | 4,430 | 19.2 | 32.1 | |||||
200/220 | 6.2/6.8 | 5.3/5.8 | 12,950 | 54.75 | 94.07 | |||||
220/240 | 4.8/5.3 | 4.2/4.6 | 18,790 | 83.5 | 136.4 | |||||
DC | 6 | 150 | 40 | 0.16 | 0.33 | 10% min. *2 | Approx. 0.9 | |||
12 | 75 | 160 | 0.73 | 1.37 | ||||||
24 | 36.9 | 650 | 3.2 | 5.72 | ||||||
48 | 18.5 | 2,600 | 10.6 | 21.0 | ||||||
100/110 | 9.1/10 | 11,000 | 45.6 | 86.2 | ||||||
3 poles
Item | Rated current (mA) | Coil resist- ance (Ω) | Coil inductance (H) | Must- operate voltage (V) | Must- release voltage (V) | Maximum voltage (V) | Power con- sumption (VA, W) | |||
Rated voltage (V) | 50 Hz | 60Hz | Armature OFF | Armature ON | ||||||
AC | 12 | 159 | 134 | 24 | 0.12 | 0.21 | 80% max. *1 | 30% min. *2 | 110% of rated voltage | Approx. 1.6 to 2.0 (at 60 Hz) |
24 | 80 | 67 | 100 | 0.44 | 0.79 | |||||
100/110 | 14.1/16 | 12.4/13.7 | 2,300 | 10.5 | 18.5 | |||||
200/220 | 9.0/10.0 | 7.7/8.5 | 8,650 | 34.8 | 59.5 | |||||
DC | 12 | 112 | 107 | 0.45 | 0.98 | 10% min. *2 | Approx. 1.4 | |||
24 | 58.6 | 410 | 1.89 | 3.87 | ||||||
48 | 28.2 | 1,700 | 8.53 | 13.9 | ||||||
100/110 | 12.7/13 | 8,500 | 29.6 | 54.3 | ||||||
4 poles
Item | Rated current (mA) | Coil resist- ance (Ω) | Coil inductance (H) | Must- operate voltage (V) | Must- release voltage (V) | Maximum voltage (V) | Power con- sumption (VA, W) | |||
Rated voltage (V) | 50 Hz | 60Hz | Armature OFF | Armature ON | ||||||
AC | 12 | 199 | 170 | 20 | 0.1 | 0.17 | 80% max. *1 | 30% min. *2 | 110% of rated voltage | Approx. 1.95 to 2.5 (at 60 Hz) |
24 | 93.6 | 80 | 78 | 0.38 | 0.67 | |||||
100/110 | 22.5/25.5 | 19/21.8 | 1,800 | 10.5 | 17.3 | |||||
200/220 | 11.5/13.1 | 9.8/11.2 | 6,700 | 33.1 | 57.9 | |||||
DC | 12 | 120 | 100 | 0.39 | 0.84 | 10% min. *2 | Approx. 1.5 | |||
24 | 69 | 350 | 1.41 | 2.91 | ||||||
48 | 30 | 1,600 | 6.39 | 13.6 | ||||||
100/110 | 15/15.9 | 6,900 | 32.0 | 63.7 | ||||||
Note: 1. The rated current and coil resistance are measured at a coil temperature of 23°C with tolerances of +15%/
-20% for the AC rated current and ±15% for the DC coil resistance.
2. The AC coil resistance and inductance values are reference values only. (at 60 Hz).
3. Operating characteristics were measured at a coil temperature of 23°C.
4. The maximum voltage capacity was measured at an ambient temperature of 23°C.
*1. There is variation between products, but actual values are 80% max.
To ensure operation, apply at least 80% of the rated value (at a coil temperature of +23° C).
*2. The actual values are 30% min. for AC and 10% min. for DC. To ensure release, use a value that is lower than the
specified value.
-20% for the AC rated current and ±15% for the DC coil resistance.
2. The AC coil resistance and inductance values are reference values only. (at 60 Hz).
3. Operating characteristics were measured at a coil temperature of 23°C.
4. The maximum voltage capacity was measured at an ambient temperature of 23°C.
*1. There is variation between products, but actual values are 80% max.
To ensure operation, apply at least 80% of the rated value (at a coil temperature of +23° C).
*2. The actual values are 30% min. for AC and 10% min. for DC. To ensure release, use a value that is lower than the
specified value.
Refer to List of Certified Models for a list of models that are certified for safety standards and the Electrical Appliances and Material Safety Act.
Classification | 1 pole | Double-, 3-, and 4-pole models | Bifurcated contacts | |||||||
Load | Resistive load | Inductive load (cos φ = 0.4, L/R = 7 ms) | Resistive load | Inductive load (cos φ = 0.4, L/R = 7 ms) | Resistive load | Inductive load (cos φ = 0.4, L/R = 7 ms) | ||||
Contact type | Single | Bifurcated | ||||||||
Contact materials | Ag alloy | Ag | ||||||||
Rated load | 15 A at 110 VAC 15 A at 24 VDC | 10 A at 250 VAC | 10 A at 110 VAC 7 A at 24 VDC | 10 A at 110 VAC 10 A at 24 VDC | 10 A at 250 VAC | 7.5 A at 110 VAC 5 A at 24 VDC 5 A at 24 VDC | 5 A at 110 VAC 5 A at 24 VDC | 4 A at 110 VAC 4 A at 24 VDC | ||
Electrical endurance*1 | 200,000 operations min. | 200,000 operations min. | 200,000 operations min. | 3-, 4-pole: 200,000 operations min. 2-pole: 500,000 operations min. | 50,000 operations min. | 3-, 4-pole: 200,000 operations min. 2-pole: 500,000 operations min. | 2-pole: 500,000 operations min. | |||
Rated carry current | 15 A | 10 A | 7 A | |||||||
Maximum contact voltage | 250 VAC 125 VDC | 250 VAC 125 VDC | 250 VAC 125 VDC | |||||||
Maximum contact current | 15 A | 10 A | 7 A | |||||||
Type | Single-pole and double-pole models (standard models and bifurcated contact models) | Single-pole, double-pole models (models with built-in operation indicators, models with built-in diodes, and models with built-in CR circuits), 3-pole and 4-pole models | ||||||||
Ambient operating temperature | -25 to 55°C (with no icing or condensation) *2 | -25 to +40°C (with no icing or condensation) *3 | ||||||||
Ambient operating humidity | 5% to 85% | |||||||||
Note: 1. Some models in the LY1 and LY2 Series have an upper temperature limit of +40°C. This limitation is due to the
diode junction temperature and the elements used.
2. Refer to Ambient Temperature vs. Coil Temperature Rise in Engineering Data on Catalog for information on
operation in temperature conditions that are not described here.
3. When you apply a minimum of 10 A of current to an LY1 when it is used in combination with the PTF-08-PU, PTF-
08-PU-L, PTF08A, PTFZ-08-E, or PT08, connect each of the following terminal pairs: (1) to (2), (3) to (4), and (5)
to (6).
*1. Ambient temperature condition: 23° C
Rated load, operating frequency: 1,800 operations/h
*2. If the carry current is 4 A or less, the usable ambient temperature range is -25 to 70° C.
*3. If the flowing current is 4 A or less, the usable ambient temperature range is -25 to 55° C.
diode junction temperature and the elements used.
2. Refer to Ambient Temperature vs. Coil Temperature Rise in Engineering Data on Catalog for information on
operation in temperature conditions that are not described here.
3. When you apply a minimum of 10 A of current to an LY1 when it is used in combination with the PTF-08-PU, PTF-
08-PU-L, PTF08A, PTFZ-08-E, or PT08, connect each of the following terminal pairs: (1) to (2), (3) to (4), and (5)
to (6).
*1. Ambient temperature condition: 23° C
Rated load, operating frequency: 1,800 operations/h
*2. If the carry current is 4 A or less, the usable ambient temperature range is -25 to 70° C.
*3. If the flowing current is 4 A or less, the usable ambient temperature range is -25 to 55° C.
Characteristics
Type | Standard models, models with built-in operation indicators, models with built-in CR circuits, and models with built-in diodes | Bifurcated contacts | |
Contact resistance *1 | 50 mΩ max. | ||
Operating time *2 | 25 ms max. | ||
Release time *2 | 25 ms max. | ||
Maximum operating frequency | Mechanical | 18,000 operations/h | |
Rated load | 1,800 operations/h | ||
Insulation resistance *3 | 100 MΩ min. | ||
Dielectric strength | Between coil and contacts | 2,000 VAC at 50/60 Hz for 1 min. | |
Between contacts of different polarity | |||
Between contacts of the same polarity | 1,000 VAC at 50/60 Hz for 1 min. | ||
Vibration resistance | Destruction | 10 to 55 to 10 Hz, 0.5-mm single amplitude (1.0-mm double amplitude) | |
Malfunction | 10 to 55 to 10 Hz, 0.5-mm single amplitude (1.0-mm double amplitude) | ||
Shock resistance | Destruction | 1,000 m/s2 | |
Malfunction | 200 m/s2 | ||
Endurance | Mechanical | AC: 50,000,000 operations min. DC: 100,000,000 operations min. (switching frequency: 18,000 operations/h) | |
Failure rate P value (reference value) *4 | 100 mA at 5 VDC | 10mA at 5 VDC | |
Weight | 1-pole and 2-pole: 40 g, 3-pole: Approx. 50 g, 4-pole: Approx. 70 g | ||
Note: The values at the left are initial values.
*1. Measurement conditions: 1 A at 5 VDC using the voltage drop method
*2. Measurement conditions: With rated operating power applied, not including contact bounce.
Ambient temperature condition: 23° C
*3. Measurement conditions: For 500 VDC applied to the same location as for dielectric strength measurement.
*4. This value was measured at a switching frequency of 120 operations per minute.
*1. Measurement conditions: 1 A at 5 VDC using the voltage drop method
*2. Measurement conditions: With rated operating power applied, not including contact bounce.
Ambient temperature condition: 23° C
*3. Measurement conditions: For 500 VDC applied to the same location as for dielectric strength measurement.
*4. This value was measured at a switching frequency of 120 operations per minute.
Endurance Under Real Loads (Reference Only)
Item | LY1, 100 VAC | LY2, 100 VAC | |||||||
Load type | Conditions | Operating frequency | Electrical life (×10,000 operations min.) | Conditions | Operating frequency | Electrical life (×10,000 operations min.) | |||
AC motor | 400 W, 100 VAC single-phase with 35-A inrush current, 7-A current flow | ON for 10 s, OFF for 50 s | 5 | 200 W, 100 VAC single-phase with 25-A inrush current, 5-A current flow | ON for 10 s, OFF for 50 s | 20 | |||
AC lamp | 300 W, 100 VAC with 51-A inrush current, 3-A current flow | ON for 5 s, OFF for 55 s | 10 | 300 W, 100 VAC with 51-A inrush current, 3-A current flow | ON for 5 s, OFF for 55 s | 8 | |||
500 W, 100 VAC with 78-A inrush current, 5-A current flow | 2.5 | ||||||||
Capacitor (2,000 μF) | 24 VDC with 50-A inrush current, 1-A current flow | ON for 1 s, OFF for 6 s | 10 | 24 VDC with 50-A inrush current, 1-A current flow | ON for 1 s, OFF for 15 s | 1 | |||
24 VDC with 20-A inrush current, 1-A current flow | 15 | ||||||||
AC solenoid | 50 VA with 2.5-A inrush current, 0.25-A current flow | ON for 1 s, OFF for 2 s | 150 | 50 VA with 2.5-A inrush current, 0.25-A current flow | ON for 1 s, OFF for 2 s | 100 | |||
100 VA with 5-A inrush current, 0.5-A current flow | 80 | 100 VA with 5-A inrush current, 0.5-A current flow | 50 | ||||||
Item | LY4, 100 VAC | ||||||||
Load type | Conditions | Operating frequency | Electrical life (×10,000 operations min.) | ||||||
AC motor | 200 W, 200 VAC three-phase with 5-A inrush current, 1-A current flow | ON for 10 s, OFF for 50 s | 50 | ||||||
750 W, 200 VAC three-phase with 18-A inrush current, 3.5-A current flow | 7 | ||||||||
AC lamp | 300 W, 100 VAC with 51-A inrush current, 3-A current flow | ON for 5 s, OFF for 55 s | 5 | ||||||
Capacitor (2,000 μF) | 24 VDC with 50-A inrush current, 1-A current flow | ON for 1 s, OFF for 15 s | 0.5 | ||||||
24 VDC with 20-A inrush current, 1-A current flow | ON for 1 s, OFF for 2 s | 20 | |||||||
AC solenoid | 50 VA with 2.5-A inrush current, 0.25-A current flow | ON for 1 s, OFF for 2 s | 100 | ||||||
100 VA with 5-A inrush current, 0.5-A current flow | 50 | ||||||||
Details on Safety-standard-certified Models, LY[]
• Standard models are certified for the UL and CSA safety standards.
• Refer to Model Number Structure on Lineup for a list of applicable models.
• The rated values for safety standard certification are not the same as individually defined performance values. Always check the specifications before use.
• Refer to Model Number Structure on Lineup for a list of applicable models.
• The rated values for safety standard certification are not the same as individually defined performance values. Always check the specifications before use.
UL-certified Models (File No. E41643)
Model | Coil ratings | Number of poles | Contact ratings | Certified number of operations |
LY | 6 to 240VAC 6 to 125VDC | 1 | 15A, 120VAC (General use) | 100,000 operations |
15A, 240VAC (General use) | 6,000 operations | |||
15A, 30VDC (Resistive) | ||||
1/2HP, 120VAC | 100,000 operations | |||
8.5FLA, 30LRA, 120VAC | ||||
TV-5, 120VAC | 25,000 operations | |||
470VA, Pilot duty, 120VAC | 6,000 operations | |||
6 to 240VAC 6 to 125VDC | 2 | 15A, 120VAC (General use) | 100,000 operations | |
12A, 240VAC (General use) | 6,000 operations | |||
7A, 250VAC (General use) | ||||
15A, 30VDC (Resistive) | ||||
5A, 38VDC (Resistive) | ||||
1/2HP, 120VAC | 100,000 operations | |||
1/3HP, 240VAC | 1,000 operations | |||
8.5FLA, 30LRA, 120VAC | 100,000 operations | |||
5FLA, 50LRA, 50VDC | ||||
TV-3, 120VAC | 25,000 operations | |||
345VA, Pilot duty, 120-240VAC | 6,000 operations | |||
B300/R300 | ||||
6 to 240VAC 6 to 125VDC | 3 4 | 10A, 240VAC (General use) (Same polarity) | 6,000 operations | |
10A, 30VDC (General use) (Same polarity) | ||||
2A, 40VDC (Resistive) (Same polarity) | ||||
1/2HP, 240VAC | 1,000 operations | |||
0.6A, 100VDC (Resistive) (Same polarity) | 6,000 operations |
CSA-certified Models (File No. LR31928)
Model | Coil ratings | Number of poles | Contact ratings | Certified number of operations |
LY | 6 to 240VAC 6 to 125VDC | 1 | 15A, 120VAC (General use) | 100,000 operations |
15A, 240VAC (General use) | 6,000 operations | |||
15A, 30VDC (Resistive) | ||||
1/2HP, 120VAC | 100,000 operations | |||
8.5FLA, 30LRA, 120VAC | ||||
TV-5, 120VAC | 25,000 operations | |||
470VA, Pilot duty, 120VAC | 6,000 operations | |||
6 to 240VAC 6 to 125VDC | 2 | 15A, 120VAC (General use) | 6,000 operations | |
12A, 240VAC (General use) | ||||
7A, 250VAC (General use) | ||||
15A, 30VDC (Resistive) | ||||
5A, 38VDC (Resistive) | ||||
1/2HP, 120VAC | 100,000 operations | |||
1/3HP, 240VAC | 1,000 operations | |||
8.5FLA, 30LRA, 120VAC | 100,000 operations | |||
5FLA, 50LRA, 50VDC | ||||
TV-3, 120VAC | 25,000 operations | |||
345VA, Pilot duty, 120-240VAC | 6,000 operations | |||
B300/R300 Pilot duty | ||||
6 to 240VAC 6 to 125VDC | 3 4 | 10A, 240VAC (General use) (Same polarity) | 6,000 operations | |
10A, 30VDC (Resistive) (Same polarity) | ||||
1/8HP, 240VAC (Same polarity) | 1,000 operations | |||
1/2HP, 240VAC (Same polarity) | ||||
1/3HP, 240VAC (Same polarity) | ||||
2A, 40VDC (Resistive) | 6,000 operations | |||
0.6A, 100VDC (Resistive) |
TÜV-certified Models (File No. R50030064, EN 61810-1)
Model | Coil ratings | Number of poles | Contact ratings | Certified number of operations |
LY[] | 6 to 240 VAC 6 to 110 VDC | 1 | 15 A, 110 VAC resistive load | 200,000 operations |
10 A, 110 VAC inductive load | ||||
10 A, 250 VAC resistive load | ||||
7A, 250 VAC inductive load | ||||
10 A, 30 VDC resistive load | ||||
7 A, 30 VDC inductive load | ||||
6 to 240 VAC 6 to 125 VDC | 2 | 10 A, 250 VAC resistive load | 50,000 operations | |
10 A, 110 VAC resistive load | 200,000 operations | |||
7.5A, 110 VAC inductive load | ||||
7A, 250 VAC resistive load | ||||
4 A, 250 VAC inductive load | ||||
7 A, 30 VDC resistive load | ||||
4 A, 30 VDC inductive load | ||||
6 to 240 VAC 6 to 110 VDC | 3 | 10 A, 250 VAC resistive load | 50,000 operations | |
10 A, 110 VAC resistive load | 100,000 operations | |||
7.5A, 110 VAC inductive load | ||||
6 to 240 VAC 6 to 125 VDC | 4 | 10 A, 250 VAC resistive load | 50,000 operations | |
10 A, 110 VAC resistive load | 100,000 operations | |||
7.5A, 110 VAC inductive load |
• When ordering a model that is certified for VDE or Lloyd’s Register (LR) standards, always specify “VDE-certified Model” or “LR Standard-certified Model” with your order.
VDE Certification (Certificate No. 6359, EN 61810-1)
Model | Coil ratings | Number of poles | Contact ratings | Certified number of operations |
LY[]-VD | 6, 12, 24, 50, 110, or 220 VAC 6, 12, 24, 48, or 110 VDC | 1 | 10 A, 220 VAC resistive load | 200,000 operations |
7 A, 220 VAC inductive load | ||||
10 A, 28 VDC resistive load | ||||
7 A, 28 VDC inductive load | ||||
2 | 7 A, 220 VAC resistive load | |||
4 A, 220 VAC inductive load | ||||
7 A, 28 VDC resistive load | ||||
4 A, 28 VDC inductive load |
LR-certified Models (File No. 00/10047)
Model | Coil ratings | Number of poles | Contact ratings |
LY[] | 6 to 240 VAC 6 to 110 VDC | 2 | 7.5 A, 230 VAC inductive load |
4 | 5 A, 24 VDC inductive load |
Details on Safety-standard-certified Models, Sockets
UL-certified Models (File No. E87929)
Model | Ratings | Listed/Recognized |
PTF-08-PU | 10A 250V | Recognized |
PTF-14-PU | 10A 250V (Same polarity) | |
PTFZ-08-E | 15A 250V (at 50 deg) 12A 250V (at 70 deg) | |
PTFZ-14-E | ||
PTF08A PT08 | 15A 250V | |
PTF11A PTF14A PT11 PT14 | 10A 250V |
CSA-certified Models (File No. LR31928)
Model | Ratings | Class number |
PTF-08-PU | 10A 250V | 3211 07 |
PTF-14-PU | 10A 250V (Same polarity) | |
PTFZ-08-E | 15A 250V (at 50 deg) 12A 250V (at 70 deg) | |
PTFZ-14-E | ||
PTF08A | 15A 240V AC | |
PTF11A PTF14A | 10A 240V AC |
CE Marking Compliance
Model | EMC Directive | Low Voltage Directive | Machinery Directive | Safety Category |
PTFZ-08-E | Not applicable | ○ | Not applicable | 1 |
PTFZ-14-E |
Note: 1. CE compliance is achieved when used with a relay (LY).
2. The Safety Category refers to the maximum applicable category selected when constructing control system safety
components. The category does not apply to individual components.
2. The Safety Category refers to the maximum applicable category selected when constructing control system safety
components. The category does not apply to individual components.
TÜV Rheinland certification
Model | Ratings | Standard number | Certification number |
PTF-08-PU | 10A 250V *1 | EN 61984 | R50327595 |
PTF-14-PU | 10A 250V *2 | ||
PTFZ-08-E | 15A 250V (at 50 deg) 12A 250V (at 70 deg) | R50438680 | |
PTFZ-14-E |
*1. Ratings are for an ambient temperature of 55°C. At an ambient temperature of 70°C, the value is 7A.
*2. Ratings are for an ambient temperature of 40°C. At an ambient temperature of 70°C, the value is 7A.
*2. Ratings are for an ambient temperature of 40°C. At an ambient temperature of 70°C, the value is 7A.
Compliance with Electrical Appliances and Material Safety Act, LY[]
All standard models comply with the Electrical Appliances and Material Safety Act.
Model | Coil ratings | Number of poles | Contact ratings |
LY[] | 6 to 240 VAC 6 to 120 VDC | 1 | 15 A at 200 VAC |
2 3 4 | 10A at 200 VAC |
Accessories (Order Separately)
Socket Characteristics
Model | Continuous carry current | Dielectric strength | Insulation resistance *1 | Remarks |
PTF-[]-PU(L) | 10 A | Between contact terminals of same polarity: 2,000 VAC, 1 min | 1,000 MΩ min. | |
Between contact terminals of different polarity: 2,000 VAC, 1 min | ||||
Between coil and contact terminals: 2,000 VAC, 1 min | ||||
PTFZ-[][]-E | 12 A (@70°C) 15 A (@50°C) *2 | Between contact terminals of different polarity: 2,500 VAC, 1 min | 1,000 MΩ min. | |
Between contact terminals of same polarity: 2,500 VAC, 1 min | ||||
Between ground terminals: 2,500 VAC, 1 min | ||||
Between coil and contact terminals: 2,500 VAC, 1 min | ||||
PTF[][]A | 10 A | Between terminals: 2,000 VAC for 1 min | 100 MΩ min. | |
PT-[][] | 10 A | Between terminals: 2,000 VAC for 1 min | 100 MΩ min. | |
PT[][]-0 | 10 A | Between terminals: 2,000 VAC for 1 min | 100 MΩ min. | |
PT[][]QN | 10 A | Between terminals: 2,000 VAC for 1 min | 100 MΩ min. |
*1. The insulation resistance was measured with a 500-VDC insulation resistance meter at the same places as those used
for measuring the dielectric strength.
*2. However, do not exceed the continuous carry current of the socket to be mounted.
for measuring the dielectric strength.
*2. However, do not exceed the continuous carry current of the socket to be mounted.