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Eaton ZB Series Thermal Overload Relay, 1 NO/1 NC, 9-12A FLC Motor Rating, 12A Contact Rating, 6W Power, 500V 278441 ZB12-12

Name: Eaton ZB Series Thermal Overload Relay, 1 NO/1 NC, 9-12A FLC Motor Rating, 12A Contact Rating, 6W Power, 500V 278441 ZB12-12
Brand: Eaton
SKU: 190789
Price: 80.38 USD
Availability: InStock

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Category Thermal Overload Relay Brand Eaton Condition New

Specifications

Country of Origin	Germany
Brand	Eaton
Length	120mm
Model	278441 ZB12-12
Depth	88mm
IP Rating	IP20
Width	45mm
Mount Type	Direct
Series	ZB
Power Rating	6W
Maximum Operating Temperature	55°C
Minimum Operating Temperature	-5°C
Terminal type	Screw
Contact Voltage	690V ac
Reset Method	Automatic & Manual
Normal State Configuration	1 NO/1 NC
Relay Contact Current	12A
Number of Auxiliary Contacts	2
Control Voltage	500V ac
FLC Motor Rating	12, 9A
Adjustable Current Range	9 → 12 A
Cooper Bussmann 50A T Cartridge Fuse, 26.9 x 139.7mmBrand	Cooper Bussmann

Key Features

Protects equipment against phase failure and electrical overload.
Features 1 normally open and 1 normally closed auxiliary contacts.
Adjustable current range from 9A to 12A for precise motor protection.
Supports both automatic and manual reset methods.
Direct mount design compatible with Eaton DILM contactors.
Operates within ambient temperature range of -5°C to 55°C with IP20 rating.
Complies with IEC/EN 60947, UL, CSA, and CE international standards.
Offers 500V AC control voltage and 6W power rating.

Product Description

Eaton 278441 ZB12-12 Thermal Overload Relay is engineered for industrial automation and motor control applications where robust protection against overload and phase failure is essential. It features a thermal bimetallic tripping mechanism calibrated to trip within 2 to 10 seconds, enhancing motor safety by disconnecting circuits during fault conditions.

This relay has a motor full load current rating ranging from 9 to 12 amps with a relay contact current of 12 amps, ensuring appropriate handling of motor loads up to the specified capacity. Its auxiliary contacts include 1 normally open and 1 normally closed configuration, enabling effective signaling and disconnection of contactors upon fault detection.

The unit supports both automatic and manual reset methods, allowing flexible operation dependent on your control system requirements. Its compact design with direct mount capability facilitates seamless integration with Eaton DILM series contactors, simplifying installation and maintenance.

Rated for a control voltage of 500V AC and power consumption of 6 watts, the relay operates effectively within an ambient temperature range of -5°C to +55°C, safeguarded by an IP20 ingress protection. Constructed according to IEC/EN 60947 and various international standards including UL, CSA, and CE certifications, it meets rigorous quality and safety norms.

This Eaton overload relay is suitable for use in electrical, automation, manufacturing, and industrial environments that require dependable motor overload protection and fault signaling. Its reliable operations help extend motor life and reduce downtime through prompt automatic intervention during electrical overloads.

Protects equipment against phase failure and electrical overload. Adjustable current range with 1 NO/1 NC auxiliary contacts. Direct mount design for Eaton DILM contactors. Automatic and manual reset options. Designed for ambient temperatures from -5°C to 55°C with IP20 rating.

Certified to IEC/EN 60947, UL, CSA, and CE standards. Ideal for industrial motor protection to extend equipment lifespan.

Explore the Eaton range of high-quality overload relays and related products in the Electronics & Electricals category at EnvMart to optimize your motor control systems with trusted reliability.

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Frequently Asked Questions

The adjustable current range of this thermal overload relay is from 9A to 12A, allowing for precise motor protection based on specific application needs.

It features 1 normally open (NO) and 1 normally closed (NC) auxiliary contact, enabling effective signaling and disconnection of contactors during fault conditions.

The power rating for this model is 6W, and it operates at a control voltage of 500V AC.

This relay operates effectively within an ambient temperature range of -5°C to +55°C.

It features a direct mount design, making it compatible with Eaton DILM contactors for easy installation.

It complies with IEC/EN 60947, UL, CSA, and CE international standards, ensuring it meets rigorous quality and safety norms.

The relay contact current rating is 12A, which allows it to handle appropriate motor loads effectively.

This model supports both automatic and manual reset methods, providing flexibility depending on the control system requirements.

The dimensions of this relay are 120mm in length, 88mm in depth, and 45mm in width.

The IP rating of this thermal overload relay is IP20, providing protection against solid objects larger than 12.5mm.

The thermal bimetallic tripping mechanism is calibrated to trip within 2 to 10 seconds, enhancing motor safety by disconnecting circuits during overload or phase failure conditions.

This overload relay is suitable for use in electrical, automation, manufacturing, and industrial environments that require dependable motor overload protection and fault signaling.