Omron Screw, DIN Track Power Relay, 12V dc Coil, 40A Switching Current, 4PST-NO

RS Stock No.:: 178-8268
Mfr. Part No.:: G7Z-4A-20Z-R 12VDC
Manufacturer:: Omron

Omron Screw, DIN Track Power Relay, 12V dc Coil, 40A Switching Current, 4PST-NO

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Subtotal (1 unit)*

PHP5,961.71

(exc. VAT)

PHP6,677.12

(inc. VAT)

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Temporarily out of stock

2 unit(s) shipping from September 10, 2026

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Units	Per Unit
1 - 4	PHP5,961.71
5 - 9	PHP5,782.86
10 +	PHP5,609.39

*price indicative

RS Stock No.:: 178-8268
Mfr. Part No.:: G7Z-4A-20Z-R 12VDC
Manufacturer:: Omron

Specifications

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Omron
	Coil Voltage	12V dc
	Product Type	Power Relay
	Contact Configuration	4PST-NO
	Mount Type	Screw, DIN Track
	Series	G7Z
	Terminal Type	Screw
	Switching Current	40A
	Switching AC Voltage	480V
	Minimum Operating Temperature	-25°C
	Switching DC Voltage	125V dc
	Coil Resistance	39Ω
	Maximum Operating Temperature	60°C
	Length	45mm
	Coil Power	3.7W
	Height	62mm
	Width	92.2mm
	Standards/Approvals	RoHS
	Contact Material	Silver Alloy
	Contact Resistance	400mΩ

	Select all
	Brand Omron
	Coil Voltage 12V dc
	Product Type Power Relay
	Contact Configuration 4PST-NO
	Mount Type Screw, DIN Track
	Series G7Z
	Terminal Type Screw
	Switching Current 40A
	Switching AC Voltage 480V
	Minimum Operating Temperature -25°C
	Switching DC Voltage 125V dc
	Coil Resistance 39Ω
	Maximum Operating Temperature 60°C
	Length 45mm
	Coil Power 3.7W
	Height 62mm
	Width 92.2mm
	Standards/Approvals RoHS
	Contact Material Silver Alloy
	Contact Resistance 400mΩ

Datasheet

Omron G7Z Series Power Relay, 12V Coil Voltage, 40A Switching Current - G7Z-4A-20Z-R 12VDC

This power relay is a Compact electromechanical switching device designed for industrial control and automation tasks where high current switching and DIN rail or screw mounting are required. It operates from a 12V DC Coil and is intended for integration in electrical cabinets and control panels that demand four independently switched poles in a normally open configuration.

Features and Benefits:

• 12V DC Coil consuming 3.7 W improves compatibility with common control supplies
• 39 Ω Coil resistance enables predictable Coil drive current
• Four-pole normally open contacts permit simultaneous multi-circuit switching
• Silver-alloy contacts support high current operation up to 40 A
• Rated for switching up to 480 VAC for AC circuits
• Screw terminals and DIN rail mounting simplify secure installation

Applications

• Suitable for motor starter control in industrial panels
• Ideal for switching multiple loads in automation racks
• Used with distribution circuits requiring 40 A contact ratings
• Can be used for DC load switching up to 125V DC
• Suitable for retrofit into DIN rail assemblies in electrical enclosures

What temperature range can it operate within?

It is specified for use between -25 °C and 60 °C, covering typical indoor industrial environments.

How does the contact resistance affect system performance?

The contact resistance of 400 mΩ influences voltage drop and heating under load, important for thermal planning at high currents.

What mounting options are available for panel integration?

It accepts screw-type connections and can be fixed onto a standard DIN rail to suit varied enclosure arrangements.

What construction detail aids long-term switching at high current?

Contacts are MADE from a silver alloy to handle frequent switching and reduce contact wear when switching heavy loads.