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 for 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
G7Z-
@
-
@ @
1
2 3
1. Relay Contact Configuration
4A: 4PST-NO
3A1B: 3PST-NO/SPST-NC
2A2B: DPST-NO/DPST-NC
2. Contact Configuration of Auxiliary Contacts
20: DPST-NO
11: SPST-NO/SPST-NC
02: DPST-NC
3. Contact Mechanism of Auxiliary Contacts
Z: Bifurcated crossbar contact
Auxiliary Contact Block
G73Z-
@ @
1 2
1. Contact Configuration of Auxiliary Contacts
20: DPST-NO
11: SPST-NO/SPST-NC
02: DPST-NC
2. Contact Mechanism of Auxiliary Contacts
Z: Bifurcated crossbar contact
■
Configuration
Structure
Classification
Relay with Auxiliary Contact Block 4 poles +
2 poles
Contact configuration
Relay
Auxiliary Contact
Block
4PST-NO
DPST-NO
SPST-NO/SPST-NC
DPST-NC
DPST-NO
SPST-NO/SPST-NC
DPST-NC
DPST-NO
SPST-NO/SPST-NC
DPST-NC
DPST-NO
SPST-NO/SPST-NC
DPST-NC
Screw terminals
(See notes 1 and 2)
3PST-NO/SPST-NC
DPST-NO/DPST-NC
Auxiliary Contact Block
2 poles
—
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
G73Z-20Z
G73Z-11Z
G73Z-02Z
Note: 1.
Relay contact terminals are M5, and the coil terminals are M3.5.
2.
Auxiliary contact block terminals are M3.5.
Power Relays
G7Z
329
Ordering Information
■
Relay with Auxiliary Contact
Block
Relay with Auxiliary Contact Block (for
Screw Terminals)
Contact configuration
Relay
Auxiliary contact block
4PST-NO DPST-NO
SPST-NO/SPST-NC
DPST-NC
3PST-NO/ DPST-NO
SPST-NC SPST-NO/SPST-NC
DPST-NC
DPST-NO/ DPST-NO
DPST-NC SPST-NO/SPST-NC
DPST-NC
Rated
voltage
12, 24 VDC
12, 24 VDC
12, 24 VDC
12, 24 VDC
12, 24 VDC
12, 24 VDC
12, 24 VDC
12, 24 VDC
12, 24 VDC
Model
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
■
Accessories (Order Separately)
Auxiliary Contact Block
Contact
configuration
DPST-NO
SPST-NO/SPST-NC
DPST-NC
Model
G73Z-20Z
G73Z-11Z
G73Z-02Z
Specifications
■
Ratings
Coil Ratings
Item Rated current
Rated voltage
12 VDC
24 VDC
333 mA
154 mA
39
Ω
156
Ω
Coil
resistance
Must operate
Must release
Maximum voltage
Power
voltage
voltage
consumption
Percentage of rated voltage
75% max.
10% min.
110%
Approx. 3.7 W
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 mea-
sured at an ambient temperature of 23°C.
There is, however, no continuous allowance.
Contact Ratings
Relay
G7Z-4A-
@
Z, G7Z-3A1B-@Z,
G7Z-2A2B-@Z
Item
Load Resistive Inductive load Resistive load
load
cosφ = 0.3
L/R = 1 ms
Contact structure
Double break
Contact material
AgSnIn
Rated load
NO
40 A at
22 A at
5 A at
440 VAC 440 VAC
110 VDC
NC
25 A at
10 A at
5 A at
440 VAC 440 VAC
110 VDC
Rated carry
NO
40 A
22 A
5A
current
NC
25 A
10 A
5A
Maximum contact voltage 480 VAC
125 VDC
Maximum contact NO
40 A
current
NC
25 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
Model
Note:
The ratings for the auxiliary contact block mounted on the G7Z
are the same as those for the G73Z auxiliary contact block.
Auxiliary Contact Block
Model
G73Z-20Z, G73Z-11Z, G73Z-02Z
Item
Load Resistive Inductive
Resistive
load
load cosφ = load L/R =
0.3
1 ms
Contact structure
Double break
Contact material
AgSnIn + Ag Rotary
Rated load
1 A at
0.5 A at
5 A at
440 VAC 440 VAC
110 VDC
Rated carry current
1A
Maximum contact voltage
480 VAC
125 VDC
Maximum contact current
1A
Maximum switching capacity 440 VA
220 VA
110 W
Minimum load
1 mA at 5 VDC
330
Power Relays
G7Z
■
Characteristics
Classification
Item
Contact resistance (See note 2.)
Operating time (See note 3.)
Release time (See note 3.)
Maximum operating Mechanical
frequency
Rated load
Insulation resistance (See note 4.)
Dielectric strength
Between coil and contacts
Between contacts of different polarity
Impulse withstand
voltage
Between coil and contacts
Between contacts of different polarity
Relay (See note 6.)
100 mΩ max.
50 ms max.
50 ms max.
1,800 operations/h
1,200 operations/h
1,000 MΩ min.
4,000 VAC, 50/60 Hz for 1 min
4,000 VAC, 50/60 Hz for 1 min
10 kV, 1.2 x 50
μs
10 kV, 1.2 x 50
μs
10 to 55 to 10 Hz, 0.5-mm single amplitude (1.0-mm double amplitude)
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)
Screw mounting: 800 m/s
2
, DIN Track mounting: 500 m/s
2
NO: 100 m/s
2
NO: 25 m/s
2
1,000,000 operations min. (at 1,800 operations/h, contact no load)
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)
2 A at 24 VDC
-25 to 60°C (with no icing or condensation)
5% to 85%
Approx. 330 g
1 mA at 5 VDC
—
—
Auxiliary contact block
G73Z-20Z, G73Z-11Z, G73Z-02Z
Model G7Z-4A-@Z, G7Z-3A1B-@Z, G7Z-2A2B-@Z
Between contacts of the same polarity
2,000 VAC, 50/60 Hz for 1 min
Between contacts of the same polarity
4.5 kV, 1.2 x 50
μs
Vibration resistance Destruction
Malfunction
Shock resistance
Destruction
Malfunction
Endurance
Mechanical
Electrical (See note 5.)
Minimum load
Ambient operating temperature
Ambient operating humidity
Weight
Note: 1.
The above values are initial values.
2.
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.
3.
The operate time was measured with the rated voltage imposed with any contact bounce ignored at the ambient temperature of 23°C.
4.
The insulation resistance was measured with a 1,000-VDC megohmmeter applied to the same places as those used for checking the
dielectric strength.
5.
The electrical endurance was measured at an ambient temperature of 23°C.
6.
The specifications for the auxiliary contact block mounted on the G7Z are the same as those for the G73Z auxiliary contact block.
Power Relays
G7Z
331
■
Approved Standards
UL Recognized (File No. E41643) - - Ambient Temp = 40°C
Model
Coil
ratings
12, 24
VDC
Contact ratings
Number of
test
operations
80,000
100,000
100,000
—
100,000
EN Standard/TÜV Certification: EN 60947-4-1
(Certification No. R50079155)
Model
G7Z
Coil ratings
12, 24 VDC
Contact ratings
NO contact AC-1: 40 A, 440 V, 50/60 Hz
AC-3: 16 A, 440 V, 50/60 Hz
DC-1: 5 A, 110 V
*AC15: 0.5 A, 440 V, 50/60 Hz
*DC13: 0.5 A, 110 V
NC contact AC-1: 25 A, 440 V, 50/60 Hz
DC-1: 5 A, 110 V
*AC15: 0.5 A, 440 V, 50/60 Hz
*DC13: 0.5 A, 110 V
G73Z
—
NO contact AC15: 0.5 A, 440 V, 50/60 Hz
NC contact DC13: 0.5 A, 110 V
Note:
Auxiliary contact ratings
G7Z
NO
40 A, 480 VAC, 60 Hz
contact (Resistive)
5 A, 120 VDC (Resistive)
22 A, 480 VAC, 60 Hz (Gen-
eral Use)
D300* (1-A current applied)
NC
25 A, 480 VAC, 60 Hz
contact (Resistive)
5 A, 120 VDC (Resistive)
10 A, 480 VAC, 60 Hz
(General Use)
D300* (1-A current applied)
—
Note:
Auxiliary contact ratings
Model
G73Z
Contact ratings
D300 (1-A current applied)
NO contact
NC contact
CSA Certification by
332
Power Relays
G7Z
Connections
■
Terminal Arrangement/Internal Connections
Relay with Auxiliary Contact Block
Note:
non-polarized coil.
G7Z-4A-20Z
53
A1 1
54 63
3
5
64
7
G7Z-4A-11Z
53
A1 1
54 61
3
5
62
7
G7Z-4A-02Z
51
A1 1
52 61
3
5
62
7
A2 2
4
6
8
A2 2
4
6
8
A2 2
4
6
8
G7Z-3A1B-20Z
53
A1 1
54 63
3
5
64
21
G7Z-3A1B-11Z
G7Z-3A1B-02Z
53
A1 1
54 61
3
5
62
21
51
A1 1
52 61
3
5
62
21
A2 2
4
6
22
A2 2
4
6
22
A2 2
4
6
22
G7Z-2A2B-20Z
G7Z-2A2B-11Z
G7Z-2A2B-02Z
53
A1 1
54 63
3
11
64
21
53
A1 1
54 61
3
11
62
21
51
A1 1
52 61
3
11
62
21
A2 2
4
12
22
A2 2
4
12
22
A2 2
4
12
22
Auxiliary Contact Block
G73Z-20Z
G73Z-11Z
G73Z-02Z
53
54 63
64
53
54 61
62
51
52 61
62
Power Relays
G7Z
333
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