US Breaker: Telemecanique Contactor, Square D Breaker & Eaton MCB Replacement Leader.

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  • Please note that US Breaker will be closing at 3PM EST on Friday March 29th. Stock orders will ship the same day up to 3PM EST as always. We appreciate your business and wish you a wonderful holiday weekend!.
  • Welcome to US Breaker. Please login, register a new free account, or utilize guest checkout to place your order.
  • Stock orders placed by 3PM (Easter Standard Time) ship the same day. A tracking number and receipt will be sent to your email.
  • NOTE: If you need help with your login please call us toll free at 866.652.2045 or email us at support@usbreaker.com



  • The Same Great Circuit Breaker & Telemecanique Starter Replacements at a Better Price.

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