Protect your electrical system with the Eaton Cutler-Hammer GBH3070 Circuit Breaker. This 3-pole, 70-amp breaker offers reliable circuit protection for your applications. Available in new condition with a 30-day return policy and 3-7 day shipping..The Eaton Cutler-Hammer GBH3070 is a 3-pole molded case circuit breaker with a 70 Amp rating and a voltage rating of 600 Volts.