The ABB EF96-100 is an electronic overload relay with a 36–100A current setting range, designed for direct mounting on ABB AF-series contactors. Unlike bimetal relays, the EF96-100 uses electronic sensing to provide accurate, repeatable protection across ambient temperature extremes from -25°C to +70°C — with no derating required for high-ambient installations.

Selectable trip classes (10E, 20E, and 30E) allow the relay to be configured for standard, hard-starting, or high-inertia motors. The relay provides phase loss detection and phase imbalance protection, covering the most frequent causes of motor burnout. It is rated for 1000V AC per IEC and 600V AC per UL, with a UL FLA of 100A and a SCCR of 100 kA at 600V when used with a 225A Class J fuse.

Best For:

- Motor protection in industrial panels using ABB AF40–AF96 contactors

- High-ambient or outdoor environments where bimetal relay derating is a concern

- Applications with hard-starting or high-inertia loads requiring Class 20E or 30E protection

- Facilities replacing analog overload relays with electronic equivalents

- Motor starters where phase loss protection is required by specification

Key Features:

- Current setting range: 36–100A

- Selectable trip class: 10E, 20E, or 30E

- Phase loss and phase imbalance detection

- Rated operational voltage: 1000V AC (IEC) / 600V AC (UL)

- UL FLA: 100A; SCCR: 100 kA @ 600V (with 225A Class J fuse)

- Operating temperature: -25°C to +70°C

- Weight: 0.802 kg; IP20

- Compatible contactors: AF40, AF52, AF65, AF80, AF96, AF116, AF140, AF146

- ABB part number: 1SAX341001R1101

Quick Specs:

-Part Number: 1SAX341001R1101

- Current Setting Range: 36–100A

- Trip Class: 10E / 20E / 30E (selectable)

- IEC Voltage Rating: 1000V AC

- UL Voltage Rating: 600V AC

- SCCR: 100 kA @ 600V (with 225A Class J fuse)

- Operating Temperature: -25°C to +70°C

- IP Rating: IP20

- Weight: 0.802 kg