Power Relays
G7Z
Multi-pole Power Relay for Contactor Current Range Capable of Carrying and Switching 40 A at 440 VAC
Ratings
Coil
Item | Rated current (mA) | Coil resistance (Ω) | Must operate voltage | Must release voltage | Maximum voltage | Power consumption (W) |
Rated voltage | Percentage of rated voltage | |||||
12 VDC | 308 | 39 | 75% max. | 10% min. | 110% | Approx. 3.7 |
24 VDC | 154 | 156 | ||||
Note: 1. Rated current and coil resistance were measured at a coil temperature of 23°C with coil resistance of ±15%.
2. Operating characteristics were measured at a coil temperature of 23°C.
3. The maximum allowable voltage is the maximum value of the fluctuation range for the Relay coil operating power supply and was measured at an ambient temperature of 23°C. There is, however, no continuous allowance.
2. Operating characteristics were measured at a coil temperature of 23°C.
3. The maximum allowable voltage is the maximum value of the fluctuation range for the Relay coil operating power supply and was measured at an ambient temperature of 23°C. There is, however, no continuous allowance.
Contacts
Relay, Relay with Auxiliary Contact Block
Model | G7Z-4A-[]Z-R, G7Z-3A1B-[]Z-R, G7Z-2A2B-[]Z-R | |||
Load | Resistive load | Inductive load cosφ = 0.3 | Resistive load L/R = 1 ms | |
Contact structure | Double break | |||
Contact material | Ag alloy | |||
Rated load | NO | 40 A at 440 VAC | 22 A at 440 VAC | 5 A at 110 VDC |
NC | 25 A at 440 VAC | 10 A at 440 VAC | 5 A at 110 VDC | |
Rated carry current | NO | 40 A * | ||
NC | 25 A | |||
Maximum contact voltage | 480 VAC | 125 VDC | ||
Maximum contact current | NO | 40 A | 22 A | 5 A |
NC | 25 A | 10 A | 5 A | |
Maximum switching capacity | NO | 17,600 VA | 9,680 VA | 550 W |
NC | 11,000 VA | 4,400 VA | 550 W | |
Failure rate P value (reference value) | 2 A at 24 VDC | |||
Note: The ratings for the auxiliary contact block mounted on the G7Z are the same as those for the G73Z auxiliary contact block.
* Set of Relay and Auxiliary Contact Block: 45 to 60°C; for the continuous carry current, reduce 40 A by 0.7 A/°C.
(See Fig. 1.)
* Set of Relay and Auxiliary Contact Block: 45 to 60°C; for the continuous carry current, reduce 40 A by 0.7 A/°C.
(See Fig. 1.)
Auxiliary Contact Block
Item | G73Z-20Z-R, G73Z-11Z-R, G73Z-02Z-R | ||
Resistive load | Inductive load cosφ = 0.3 | Resistive load L/R = 1 ms | |
Contact structure | Single break | ||
Contact material | Au clad + AgNi | ||
Rated load | 1 A at 440 VAC | 0.5 A at 440 VAC | 0.5 A at 110 VDC |
Rated carry current | 1A | ||
Maximum contact voltage | 480 VAC | 125 VDC | |
Maximum contact current | 1A | 0.5 A | |
Maximum switching capacity | 440 VA | 220 VA | 55 W |
Failure rate P value (reference value) | 1 mA at 1 VDC | ||
Characteristics
Classification | Relay with auxiliary contact block *5 | Auxiliary contact block | |
Model | G7Z-4A-[]Z-R, G7Z-3A1B-[]Z-R, G7Z-2A2B-[]Z-R | G73Z-20Z-R, G73Z-11Z-R, G73Z-02Z-R | |
Contact resistance *1 | 400 mΩ max. | 100 mΩ max. | |
Operating time *2 | 50 ms max. | ||
Release time *2 | 50 ms max. | ||
Maximum operating frequency | Mechanical | 1,800 operations/h | |
Rated load | 1,200 operations/h | ||
Insulation resistance *3 | 1,000 MΩ min. | ||
Dielectric strength | Between coil and contacts | 4,000 VAC, 50/60 Hz for 1 min | --- |
Between contacts of different polarity | 4,000 VAC, 50/60 Hz for 1 min | ||
Between contacts of the same polarity | 2,000 VAC, 50/60 Hz for 1 min | ||
Impulse withstand voltage | Between coil and contacts | 10 kV, 1.2 × 50 μs | --- |
Between contacts of different polarity | 10 kV, 1.2 × 50 μs | ||
Between contacts of the same polarity | 4.5 kV, 1.2 × 50 μs | 3.0 kV, 1.2 × 50 μs | |
Vibration resistance | Destruction | 10 to 55 to 10 Hz, 0.5-mm single amplitude (1.0-mm double amplitude) | |
Malfunction | NO: 10 to 55 to 10 Hz, 0.5-mm single amplitude (1.0-mm double amplitude) NC: 10 to 32 to 10 Hz, 0.5-mm single amplitude (1.0-mm double amplitude) | ||
Shock resistance | Destruction | Screw mounting: 700 m/s2, DIN Track mounting: 500 m/s2 | |
Malfunction | NO: 100 m/s2 NC: 25 m/s2 | ||
Durability | Mechanical | 1,000,000 operations min. (at 1,800 operations/h, contact no load) | |
Electrical *4 | AC resistive load: 80,000 operations AC inductive load: 80,000 operations DC resistive load: 100,000 operations (at 1,200 operations/h, rated load) | ||
Failure rate (P level) (reference value) *6 | 2 A at 24 VDC | 1 mA at 1 VDC | |
Ambient operating temperature | -25 to 60°C (with no icing or condensation) | ||
Ambient operating humidity | 5% to 85% | ||
Weight | Approx. 330 g | Approx. 18 g | |
Note: The above values are initial values.
*1. The contact resistance for the Relay (G7Z) was measured with 1 A at 5 VDC using the voltage drop method. The contact resistance for the auxiliary contact block (G73Z) was measured with 0.1 A at 5 VDC using the voltage drop method.
*2. The operate time was measured with the rated voltage imposed with any contact bounce ignored at the ambient temperature of 23℃.
*3. The insulation resistance was measured with a 1,000-VDC megohmmeter applied to the same places as those used for checking the dielectric strength.
*4. The electrical endurance was measured at an ambient temperature of 23℃.
*5. The specifications for the auxiliary contact block mounted on the G7Z are the same as those for the G73Z auxiliary contact block.
*6. The failure rate is based on an operating frequency of 1,800 operations/h.
*1. The contact resistance for the Relay (G7Z) was measured with 1 A at 5 VDC using the voltage drop method. The contact resistance for the auxiliary contact block (G73Z) was measured with 0.1 A at 5 VDC using the voltage drop method.
*2. The operate time was measured with the rated voltage imposed with any contact bounce ignored at the ambient temperature of 23℃.
*3. The insulation resistance was measured with a 1,000-VDC megohmmeter applied to the same places as those used for checking the dielectric strength.
*4. The electrical endurance was measured at an ambient temperature of 23℃.
*5. The specifications for the auxiliary contact block mounted on the G7Z are the same as those for the G73Z auxiliary contact block.
*6. The failure rate is based on an operating frequency of 1,800 operations/h.
Approved Standards
UL Standard: (File No. E41643)
Classifi-cation | Con-tact Mecha-nism of Auxi-liary Con-tacts | Model | Num-ber of poles | Contact ratings | Number of test opera-tions | Coil ratings | Category | Listed/ Recog-nized | ||
Relay with Auxiliary Contact Block | Single-break models | G7Z-4A-20Z-R G7Z-4A-11Z-R G7Z-4A-02Z-R G7Z-3A1B-20Z-R G7Z-3A1B-11Z-R G7Z-3A1B-02Z-R G7Z-2A2B-20Z-R G7Z-2A2B-11Z-R G7Z-2A2B-02Z-R | 4 poles + 2 poles (Relay unit + auxi-liary con-tact) | NO contact | Relay | 40 A, 480 VAC, 60 Hz (Resistive) | 80,000 | 12, 24 VDC | NLDX2, NLDX8 | Recog-nized |
5 A, 120 VDC (Resistive) | 100,000 | |||||||||
22 A, 480 VAC, 60 Hz (General Use) | 100,000 | |||||||||
Auxiliary Contact | D300 (1-A current applied) | --- | ||||||||
NC contact | Relay | 25 A, 480 VAC, 60 Hz (Resistive) 5 A, 120 VDC (Resistive) 10 A, 480 VAC, 60 Hz (General Use) | 100,000 | |||||||
Auxiliary Contact | D300 (1-A current applied) | --- | ||||||||
Relay | --- | G7Z-4A G7Z-3A1B G7Z-2A2B | 4 poles (Relay) | NO contact | (Relay) | 40 A, 480 VAC, 60 Hz (Resistive) | 80,000 | 12, 24 VDC | NLDX2, NLDX8 | Recog-nized |
5 A, 120 VDC (Resistive) | 100,000 | |||||||||
22 A, 480 VAC, 60 Hz (General Use) | 100,000 | |||||||||
NC contact | 25 A, 480 VAC, 60 Hz (General Use) | 100,000 | ||||||||
5 A, 120 VDC (Resistive) | ||||||||||
10 A, 480 VAC, 60 Hz (General Use) | ||||||||||
Auxiliary Contact Block | Single-break models | G73Z-20Z-R G73Z-11Z-R G73Z-02Z-R | 2 poles (Auxi-liary Con-tact Block) | NO contact | (Auxiliary Contact) | D300 (1-A current applied) | --- | --- | NLDX2, NLDX8 | Recog-nized |
NC contact | D300 (1-A current applied) | |||||||||
CSA Standard: CSA Certification by cUL
EN Standard/TÜV Certification: EN 60947-4-1 (Certification No. R50079155)
EN Standard/TÜV Certification: EN 60947-4-1 (Certification No. R50079155)
Category | Contact Mechanism of Auxiliary Contacts | Model | Number of poles | Contact ratings | ||
Relay with Auxiliary Contact Block | Single-break models | G7Z-4A-20Z-R G7Z-4A-11Z-R G7Z-4A-02Z-R G7Z-3A1B-20Z-R G7Z-3A1B-11Z-R G7Z-3A1B-02Z-R G7Z-2A2B-20Z-R G7Z-2A2B-11Z-R G7Z-2A2B-02Z-R | 4 poles + 2 poles (Relay unit + auxiliary contact) | NO contact | Relay | AC-1: 40 A 440 V 50/60 Hz AC-3: 16 A 440 V 50/60 Hz DC-1: 5 A 110 V |
Auxiliary Contact | AC-15: 0.3 A 440 V 50/60 Hz DC-13: 0.3 A 110 V | |||||
NC contact | Relay | AC-1: 25 A 440 V 50/60 Hz DC-1: 5 A 110 V | ||||
Auxiliary Contact | AC-15: 0.3 A 440 V 50/60 Hz DC-13: 0.3 A 110 V | |||||
Relay | --- | G7Z-4A G7Z-3A1B G7Z-2A2B | 4 poles (Relay) | NO contact | (Relay) | AC-1: 40 A 440 V 50/60 Hz AC-3: 16 A 440 V 50/60 Hz DC-1: 5 A 110 V |
NC contact | AC-1: 25 A 440 V 50/60 Hz DC-1: 5 A 110 V | |||||
Auxiliary Contact Block | Single-break models | G73Z-20Z-R G73Z-11Z-R G73Z-02Z-R | 2 poles (Auxiliary Contact Block) | NO contact | (Auxiliary Contact) | AC-15: 0.3 A 440 V 50/60 Hz DC-13: 0.3 A 110 V |
NC contact | AC-15: 0.3 A 440 V 50/60 Hz DC-13: 0.3 A 110 V | |||||
CCC Certification
Classification | Contact Mechanism of Auxiliary Contacts | Model | Standard No. | Certification No. |
Relay with Auxiliary Contact Block | Single-break models | G7Z-4A-20Z-R G7Z-4A-11Z-R G7Z-4A-02Z-R G7Z-3A1B-20Z-R G7Z-3A1B-11Z-R G7Z-3A1B-02Z-R G7Z-2A2B-20Z-R G7Z-2A2B-11Z-R G7Z-2A2B-02Z-R | GB/T 14048.4 | 2009010304361493 |
Relay | --- | G7Z-4A G7Z-3A1B G7Z-2A2B | GB/T 14048.4 |