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Transparent electronic overload relay with three terminals

Eaton

Eaton XTOE020BCS Overload Relay 4-20A Class 10/20/30 3P

SKU CH-9MWQ-SSXHD

Protects three-phase motors with 4–20 A electronic overload sensing and selectable Class 10/20/30 trip curves

  • TypeElectronic, ZEB12-20
  • ColorTransparent
  • Adjustable protection from 4 A to 20 A
  • Trip class configurable to 10, 20 or 30
  • Direct contactor mounting simplifies installation
  • Auto and manual reset options available
  • Three-pole electronic overload relay for three-phase circuits

Application and purpose

The Eaton XTOE020BCS is an electronic overload relay designed for three-phase motor protection. It mounts directly onto compatible Series XT Mini Contactors and suits control panels where adjustable trip settings are required. The unit provides a 4 A to 20 A current range with selectable Class 10, 20 or 30 trip curves. It is not intended for single-phase loads or for NEMA-rated contactors outside the specified frame.

Upgrade scope

This relay replaces fixed-heater thermal units by offering electronic adjustment across the full 4 A to 20 A span. The jump is worthwhile when motor full-load current falls between standard heater sizes or when the same panel must cover multiple motor ratings. It does not add communication protocols or advanced diagnostics beyond the basic trip function.

Sustained-load behaviour

Under continuous operation the electronic sensing maintains consistent trip times across the chosen class without the drift seen in bimetallic elements. Auto and manual reset modes are both available for recovery after a fault. The 1 NO / 1 NC auxiliary contact signals status to the control circuit during extended run cycles.

Highlights

  • Adjustable protection from 4 A to 20 A
  • Trip class configurable to 10, 20 or 30
  • Direct contactor mounting simplifies installation
  • Auto and manual reset options available
  • Three-pole electronic overload relay for three-phase circuits

Specifications

BrandEaton
ModelXTOE020BCS
TypeElectronic, ZEB12-20
ColorTransparent

Questions about this item

What contactor frame size does the XTOE020BCS mount on directly?

The relay uses direct-to-contactor mounting and is compatible with Series XT mini contactors in frame size B.

How is the trip class set on the XTOE020BCS and what mistake should be avoided?

Trip class 10, 20 or 30 is selected electronically; the common error is leaving the default instead of matching the motor start profile.

Does the XTOE020BCS require separate thermal units for replacement?

No, the electronic overload design does not use interchangeable thermal units.

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