Eaton Overload Relay 1NO + 1NC, 9 → 12 A F.L.C, 12 A Contact Rating, 6 W, 500 Vac

RS Stock No.:: 493-0400
Mfr. Part No.:: 278441 ZB12-12
Manufacturer:: Eaton

Eaton Overload Relay 1NO + 1NC, 9 → 12 A F.L.C, 12 A Contact Rating, 6 W, 500 Vac

1 / 4

Subtotal (1 unit)**

TWD1,858.00

(exc. GST)

TWD1,950.90

(inc. GST)

Temporarily out of stock - back order for despatch 20/09/2025, delivery within 6 working days*

* Delivery dates may change based on your chosen quantity and delivery address.

FREE delivery for orders over TWD1,300.00 (ex VAT)

Units	Per unit
1 +	TWD1,858.00

**price indicative

RS Stock No.:: 493-0400
Mfr. Part No.:: 278441 ZB12-12
Manufacturer:: Eaton

Eaton Contactor Overload Relay – ZB Series Thermal Overload Relays

The Eaton ZB series thermal overload relay with direct contactor mounting offers reliable motor protection and control in the event of a single-phase failure or overload within a multitude of environments. The auxiliary contacts disconnect the contactor and signal the fault when it overloads, meaning a reset can then take place. It works by cutting off the current to the motor when a high current situation occurs. As the relay receives the corresponding signal, it trips.

This Eaton product is predominantly designed for imitating the heating prototypes that are a staple for keeping your motor circuits healthy, which increases the motor lifetime. It provides an affordable and efficient way for you to protect your motors, whilst giving you peace of mind that you have sufficient motor protection and control.

Eaton’s ZB series overload relays offer reliable and high-quality electric motor control within a multitude of automation and control environments. The ZB series overload relays come with a 500 V ac control voltage, a contact voltage rating of up to 1000 V ac, a temperature range of -5 to +55 °C and 2 auxiliary contact points. Eaton offer a wide range of reliable contactor overload relays to protect machinery from overheating, keeping your business and its operations accessible. All Eaton ZB thermal overload relays can also be used for protecting EEx e motors whilst being an effective and sustainable way for you to protect your motors.

Features and Benefits

• Protects equipment against phase failure or electrical overload.
• Short circuit protection when fitted directly to a contact.
• Modular relay design for use with the DILM contactor range
• 1NO/1NC Auxiliary contacts
• Bimetallic tripping mechanism with trip response from 2 to 10 seconds
• Suitable for protection of Atex motors.
• Single phase failure sensitivity to IEC/EN 60947.
• Manual and automatic reset options.
• Class 10 A overload

When fitting overload relay remote from contactor or using more than one overload relay, use remote mounting base (stock no. 493-0488 - ZB32 only, stock no. 513-0336 - ZB65 only). Note: ZB12 have 5 pins, ZB32 have 4 pins.

Note

ZB12 have 5 pins, ZB32 have 4 pins.

Eaton 9 - 12 A Thermal Overload Relay – ZB12-12

Eaton ZB12 overload relays are direct mount only. The ZB12-12 relay has a 9 - 12 A FLC Motor Rating.

Note

Eaton formerly known as Moeller

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Eaton
	FLC Motor Rating	9 → 12 A
	Contact Current Rating	12 A
	Mounting Style	Direct Contactor
	Power Rating	6 W
	Normal State Configuration	NO/NC
	Reset Method	Automatic, Manual
	Terminal Type	Screw
	Number Of Auxiliary Contacts	2
	Width	45mm
	Length	120mm
	Depth	88mm
	Minimum Operating Temperature	-5°C
	Maximum Operating Temperature	+55°C
	Operating Temperature Range	-5 → +55 °C
	Control Voltage	500 V ac
	Contact Voltage Rating	690 V ac

	Select all
	Brand Eaton
	FLC Motor Rating 9 → 12 A
	Contact Current Rating 12 A
	Mounting Style Direct Contactor
	Power Rating 6 W
	Normal State Configuration NO/NC
	Reset Method Automatic, Manual
	Terminal Type Screw
	Number Of Auxiliary Contacts 2
	Width 45mm
	Length 120mm
	Depth 88mm
	Minimum Operating Temperature -5°C
	Maximum Operating Temperature +55°C
	Operating Temperature Range -5 → +55 °C
	Control Voltage 500 V ac
	Contact Voltage Rating 690 V ac