Power Relays
G7Z
Multi-pole Power Relay for Carrying and Switching
Contactor Current Range of 40 A at 440 VAC
40 A can be carried and switched on each of 4 poles.
Possible to reach a maximum load capacity of 160 A when
using 4-pole parallel connections.
EN 60947-4-1 certification fo r mirror contact mechanisms
has been obtained by using a combination of the relay and
auxiliary contact blocks.
Typical applications: high current or high inrush power
supplies, commercial and industrial.
RoHS compliant.
Model Number Structure
Model Number Legend
Relay with Auxiliary Contact Block Auxiliary Contact Block
G7Z-@-@@ DC@ G73Z-@@
12 3 4 1 2
1. Relay Contact Configuration 1. Contact Configuration of Auxiliary Contacts
4A: 4PST-NO 20: DPST-NO
3A1B: 3PST-NO/SPST-NC 11: SPST-NO/SPST-NC
2A2B: DPST-NO/DPST-NC 02: DPST-NC
2. Contact Configuration of Auxiliary Contacts 2. Contact Mechanism of Auxiliary Contacts
20: DPST-NO Z: Bifurcated crossbar contact
11: SPST-NO/SPST-NC
02: DPST-NC
3. Contact Mechanism of Auxiliary Contacts
Z: Bifurcated crossbar contact
4. Contact Mechanism of Auxiliary Contacts
12: 12 VDC
24: 24 VDC
Ordering Information
Structure Contact configuration Screw terminals
(See notes 1 and 2)
Relay Auxiliary Contact
Classification
Block
Relay with Auxiliary Contact Block 4 poles + 4PST-NO DPST-NO G7Z-4A-20Z
2 poles
SPST-NO/SPST-NC G7Z-4A-11Z
DPST-NC G7Z-4A-02Z
3PST-NO/SPST-NC DPST-NO G7Z-3A1B-20Z
SPST-NO/SPST-NC G7Z-3A1B-11Z
DPST-NC G7Z-3A1B-02Z
DPST-NO/DPST-NC DPST-NO G7Z-2A2B-20Z
SPST-NO/SPST-NC G7Z-2A2B-11Z
DPST-NC G7Z-2A2B-02Z
Auxiliary Contact Block 2 poles DPST-NO G73Z-20Z
SPST-NO/SPST-NC G73Z-11Z
DPST-NC G73Z-02Z
Note: 1. Relay contact terminals are M5, and the coil terminals are M3.5.
2. Auxiliary contact block terminals are M3.5.
3. To Order: Select the part number and add the desired coil voltage rating (e.g., G7Z-4A-20Z DC12)
Power Relays G7Z 353Specifications
Ratings
Coil Ratings
Item Rated current Coil Must operate Must release Maximum voltage Power
resistance voltage voltage consumption
Rated voltage
Percentage of rated voltage
12 VDC 308 mA 39 75% max. 10% min. 110% Approx. 3.7 W
24 VDC 154 mA 156
Note: 1. Rated current and coil resistance were measured at a coil temperature of 23C with coil resistance of 15%.
2. Operating characteristics were measured at a coil temperature of 23C.
3. The maximum allowable voltage is the maximum value of the fluctuation range for the Relay coil operating power supply and was mea-
sured at an ambient temperature of 23C. There is, however, no continuous allowance.
Contact Ratings
Relay Auxiliary Contact Block
Model G7Z-4A-@Z, G7Z-3A1B-@Z, Model G73Z-20Z, G73Z-11Z, G73Z-02Z
G7Z-2A2B-@Z
Item LoadResistive Inductive Resistive
Item LoadResistive Inductive load Resistive load load load cos = load L/R =
load cos = 0.3 L/R = 1 ms 0.3 1 ms
Contact structure Double break Contact structure Double break
Contact material Ag alloy Contact material Au clad + Ag
Rated load NO 40 A at 22 A at 5 A at Rated load 1 A at 0.5 A at 0.5 A at
440 VAC 440 VAC 110 VDC 440 VAC 440 VAC 110 VDC
NC 25 A at 10 A at 5 A at Rated carry current 1 A
440 VAC 440 VAC 110 VDC
Maximum contact voltage 480 VAC 125 VDC
Rated carry NO 40 A
Maximum contact current 1 A
current
NC 25 A
Maximum switching capacity 440 VA 220 VA 55 W
Maximum contact voltage 480 VAC 125 VDC
Minimum load 1 mA at 5 VDC
Maximum contact NO 40 A 22 A 5 A
current
NC 25 A 10 A 5 A
Maximum NO 17,600 VA 9,680 VA 550 W
switching capacity
NC 11,000 VA 4,400 VA 550 W
Minimum load 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.
354 Power Relays G7Z