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G7Z

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.

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.

Auxiliary Contact Block

Item G73Z-20Z-R, G73Z-11Z-R, G73Z-02Z-R G73Z-20Z, G73Z-11Z, G73Z-02Z
Resistive
load
Inductive
load
cosφ = 0.3
Resistive
load
L/R = 1 ms
Resistive
load
Inductive
load
cosφ = 0.3
Resistive
load
L/R = 1 ms
Contact structure Single break Double break
Contact material Au clad + AgNi Au clad + Ag
Rated load 1 A at
440 VAC
0.5 A at
440 VAC
0.5 A at
110 VDC
1 A at
440 VAC
0.5 A at
440 VAC
0.5 A at
110 VDC
Rated carry current 1A 1A
Maximum
contact voltage
480 VAC 125 VDC 480 VAC 125 VDC
Maximum
contact current
1A 0.5 A 1A 0.5 A
Maximum
switching capacity
440 VA 220 VA 55 W 440 VA 220 VA 55 W
Failure rate P value
(reference value)
1 mA at 1 VDC 1 mA at 5 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
G73Z-20Z,
G73Z-11Z,
G73Z-02Z
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 4.5 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 1 mA at 5 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.

Approved Standards

UL Standard: UL508, UL840 (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)
---
Double-break
models
G7Z-4A-20Z
G7Z-4A-11Z
G7Z-4A-02Z
G7Z-3A1B-20Z
G7Z-3A1B-11Z
G7Z-3A1B-02Z
G7Z-2A2B-20Z
G7Z-2A2B-11Z
G7Z-2A2B-02Z
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)
Double-break
models
G73Z-20Z
G73Z-11Z
G73Z-02Z
NO
contact
D300
(1-A
current
applied)
--- NLDX2,
NLDX8
NC
contact
D300
(1-A
current
applied)

CSA Standard: CSA Certification by cUL: CSA C22.2 No. 14
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
Double-break
models
G7Z-4A-20Z
G7Z-4A-11Z
G7Z-4A-02Z
G7Z-3A1B-20Z
G7Z-3A1B-11Z
G7Z-3A1B-02Z
G7Z-2A2B-20Z
G7Z-2A2B-11Z
G7Z-2A2B-02Z
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: 0.5 A 440 V 50/60 Hz
DC-13: 0.5 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: 0.5 A 440 V 50/60 Hz
DC-13: 0.5 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
Double-break
models
G73Z-20Z
G73Z-11Z
G73Z-02Z
NO contact AC-15: 0.5 A 440 V 50/60 Hz
DC-13: 0.5 A 110 V
NC contact AC-15: 0.5 A 440 V 50/60 Hz
DC-13: 0.5 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 14048.4 2009010304361493
Double-break models G7Z-4A-20Z
G7Z-4A-11Z
G7Z-4A-02Z
G7Z-3A1B-20Z
G7Z-3A1B-20Z
G7Z-3A1B-11Z
G7Z-3A1B-02Z
G7Z-2A2B-20Z
G7Z-2A2B-11Z
G7Z-2A2B-02Z
Relay --- G7Z-4A
G7Z-3A1B
G7Z-2A2B