USD 83.27
40A 4PST-NO power relay (24VDC coil). Features DPST-NC auxiliary contacts, 480VAC switching, and chassis mount design for industrial motors and high-current DC power systems.
The Omron G7Z-4A-02Z-R DC24 is a compact electromagnetic power relay designed for heavy industrial automation. Operating on a 24V DC coil, it features a 4PST-NO main contact configuration capable of handling 40A per pole, and includes a built-in DPST-NC auxiliary contact block. It is engineered with a bifurcated crossbar (single break) mirror contact mechanism certified to EN 60947-4-1 standards. Measuring just 45mm in width, it is ideal for space-constrained chassis or DIN rail mounting, offering significant noise reduction compared to standard contactors (approx. 70 dB). It perfectly supplies power to industrial inverters, servo drivers, and heavy motor loads.
| Parameter | Value |
|---|---|
| Coil Voltage | 24 VDC |
| Main Contact Configuration | 4PST-NO |
| Main Contact Rating | 40 A per pole |
| Auxiliary Contact Configuration | DPST-NC |
| Auxiliary Contact Rating | 1 A |
| Maximum AC Switching Voltage | 480 VAC |
| Maximum DC Switching Voltage | 125 VDC |
| Coil Power Consumption | Approx. 3.7 W |
| Operating Temperature | -25°C to +60°C |
| Dimensions (W x H x D) | 45 mm x 62 mm x 92.2 mm |
| Mounting Type | Chassis / DIN Rail Mount |
| Contact Resistance (Main) | 400 mΩ max |
Using the relay to isolate and switch main AC/DC power feeds to large industrial servo drivers and inverters on automated manufacturing lines.
Standard contactors are bulky and noisy. The G7Z series fits into space-constrained 45mm DIN rail slots while handling 40A per pole and providing EN 60947-4-1 compliant mirror contacts for safety circuits.
Routing high-current 24VDC, 48VDC, or 125VDC power in uninterruptible power supplies (UPS) or battery energy storage systems during main power failure.
Needs a reliable DC switching capability. The relay handles up to 125 VDC maximum switching voltage and can carry up to 160A when wired with 4-pole parallel connections, offering a robust DC power failover mechanism.
Direct switching of three-phase industrial motors for large HVAC blowers or water treatment pumps.
Requires a 40A rated power relay capable of directly switching up to 480 VAC across multiple poles, alongside auxiliary NC contacts for PLC feedback and safety interlocks.
