Eaton ZB65-57 Thermal Overload Relay 50-57 A, Class 10A, 1NO+1NC, Black/White 278459

The Eaton ZB65-57 stands out by offering a precise 50–57 A adjustment range in a compact thermal overload relay, engineered for direct mounting onto DILM50–DILM150 contactors without additional adapters. Its selectable manual/automatic reset and temperature compensation from -25 to +55 °C ensure consistent motor protection even in fluctuating thermal environments.

Highlights

• Current setting range: 50–57 A
• Overload release class: 10A
• Auxiliary contacts: 1 NO + 1 NC
• Manual or automatic reset, selectable
• Temperature compensated: -25 to +55 °C
• Direct mounting on Eaton DILM50–DILM150 contactors

In daily use

Set the desired current with a screwdriver, choose reset behaviour via the front dial, and the relay will monitor three-phase AC motors up to 690 V. The test and stop functions allow quick commissioning and manual tripping, while the trip indication gives immediate visual status. Screw terminals accept solid or stranded conductors for secure wiring.

Full specifications

• Rated operational voltage (Ue): up to 690 V AC
• Rated insulation voltage (Ui): 690 V AC
• Rated impulse withstand voltage (Uimp): 6 kV
• Number of poles: 3
• Degree of protection: IP20
• Mounting: direct to DILM50–DILM150 or stand-alone
• Terminal type: screw terminals
• Test function: yes
• Stop function: yes
• Trip indication: yes
• Standards compliance: IEC/EN 60947-4-1, VDE 0660, UL, CSA

Final note

Pair the ZB65-57 with an Eaton DILM contactor for a complete, reliable motor starter solution.