Eaton Cutler-Hammer

Eaton CH340ST CH Thermal Magnetic Circuit Breaker – 40A, 3-Pole, 240V, Shunt Trip

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SKU: CH340ST GTIN/UPC: 782113322124
$413.00
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The Eaton CH340ST CH thermal magnetic circuit breaker provides reliable overcurrent protection with integrated shunt trip functionality for remote disconnection. Designed for use in Eaton CH loadcenters, it delivers common-trip operation across all three poles to ensure balanced circuit protection. The shunt trip feature allows external control of the breaker for safety systems, automation, or emergency shutdown applications.

Electrical Ratings

  • Current Rating: 40A
  • Voltage Rating: 240V AC
  • Number of Poles: Three-pole
  • Interrupt Rating: 10 kAIC
  • Trip Type: Common breaker trip
  • Circuit Breaker Type: CH
  • Shunt Trip: Included

Key Specifications

  • Manufacturer: Eaton
  • Catalog Number: CH340ST
  • UPC: 782113322124
  • Product Type: Thermal magnetic circuit breaker
  • Used With: Type CH loadcenters
  • Standards: UL 489 certified
  • Wire Size: #10–1/0 AWG Cu/Al
  • Application: Branch circuit protection with remote trip capability
  • Type: 3/4-inch CH standard circuit breaker with shunt trip
  • Warranty: Limited lifetime residential, 1 year commercial

Physical Details

  • Product Length/Depth: 4.5 in
  • Product Height: 3.5 in
  • Product Width: 4.5 in
  • Product Weight: 1.15 lb

Product Data

  • Application: Residential and commercial electrical distribution systems
  • Compatibility: Eaton CH loadcenter panels
  • Installation Use: Plug-on breaker requiring three 3/4-inch spaces
  • Function: Provides thermal magnetic protection with shunt trip for remote switching and safety control
  • Safety Feature: Enables externally controlled circuit interruption for emergency or automated systems
  • Type Thermal Magnetic
  • Vendor Eaton Cutler-Hammer
  • Brand Eaton

Returns are easy

You may return items within 30 days of delivery for a refund.

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My Circuit Breakers provides a comprehensive 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer). Extended warranties are available upon request.