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G7Z
Power Relays
Multi-pole Power Relay for Contactor Current Range Capable of Carrying and Switching 40 A at 440 VAC
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last update: October 1, 2024
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.)
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.)
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)
| 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 | 2024010304685837 |
| Relay | --- | G7Z-4A
G7Z-3A1B G7Z-2A2B |
GB/T 14048.4 |
last update: October 1, 2024
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