E-Frame Breaker are Lighting Panelboard Circuit breakers that are proven effective and reliable which provide a wide variety or robust features that are use specifically in Square D NF Panelboards. This range of breaker is ideally designed to offer superior overload and short circuit protection. All E-Frame breakers have a thermal-magnetic trip unit as well as signal indicator that will indicate when a trip has occur. This bolt on circuit breaker has a maximum voltage rating of 480Y/277 VAC. This E-Frame breaker is 70A, 3 pole, and has an operating voltage of 480Y/277 VAC. It also provides a 100 kA max interrupt rating at 120 VAC. This device has a hold current of 630A which is the maximum current the breaker can be held to ensure it will trip and a trip current of 1800A which is the current value when the breaker is guaranteed to trip. Many accessories are available for this breaker. This breaker was calibrated for 40 degrees C. HACR rated.