Eaton ZB150-70 Thermal Overload Relay, 70-150 A, 3-Pole, Class 10A, Black/White 278463

The Eaton ZB150-70 stands out with its wide 70–150 A setting range and selectable manual/automatic reset, making it a flexible choice for protecting motors in demanding industrial environments. Its bimetallic release mechanism with phase failure sensitivity ensures reliable operation even under unbalanced load conditions.

Highlights

• Adjustable current setting from 70 A to 150 A for precise motor protection
• 3-pole design with 1 NO + 1 NC auxiliary contacts for control integration
• Direct mounting to Eaton DILM contactors simplifies installation
• Selectable manual or automatic reset for operational flexibility
• Complies with IEC/EN 60947-4-1, VDE 0660, UL 508, and CSA C22.2 No. 14

In daily use

Designed for AC applications up to 690 V, the ZB150-70 provides dependable overload protection in motor control centers, pumps, fans, and conveyors. Its IP20 protection and wide operating temperature range from -25 °C to 55 °C make it suitable for a variety of industrial settings.

Full specifications

• Current setting range: 70 - 150 A
• Trip class: Class 10A
• Number of poles: 3
• Rated operational voltage: up to 690 V AC
• Rated insulation voltage: 690 V
• Rated impulse withstand voltage: 6 kV
• Operating temperature: -25 to 55 °C
• Storage temperature: -40 to 80 °C
• Degree of protection: IP20
• Phase failure sensitivity: Yes
• Overload release principle: Bimetallic
• Mounting: Direct to contactor
• Auxiliary contacts: 1 NO + 1 NC
• Reset type: Manual/Automatic selectable
• Standards: IEC/EN 60947-4-1, VDE 0660, UL 508, CSA C22.2 No. 14

Final note

With its robust construction and compliance with major international standards, the Eaton ZB150-70 is a reliable choice for motor protection in industrial automation.