Description
Ground faults can occur when electrical equipment is worn, defective or accidentally misused. Square D® QO and QOB miniature circuit breakers with ground fault protection provide load level
detection that isolates only the affected circuit when a ground leakage occurs. Applying branch breakers with integral ground fault protection allows users to quickly identify the ground leakage’s current location and address the problem before it escalates to hazardous levels.
Improve system reliability and safety
- Load level ground fault detection maximizes continuity of power distribution by isolating only the affected circuit when a ground leakage occurs
- Low level ground fault sensing at 5 mA, 30 mA or 100 mA detects load level ground faults and isolates the circuit before hazardous levels occur
- Detecting low level faults before they escalate to levels that can cause excessive equipment damage reduces system downtime
- Load level ground fault protection reduces the time required to troubleshoot the cause of the ground fault by isolating the load where the ground leakage has occurred
- Ground fault push-to-test feature confirms if the internal ground fault circuitry is working
- An optional IP20 rated terminal shield on the load end of the circuit breaker enhances protection (this accessory is infrared compatible to facilitate thermal scanning)
Save space and installation time
- Ground fault protection integrated into the UL 489-listed circuit breaker eliminates the need for external current transformers or add-on modules
- Line-powered electronics eliminate the need for a control power transformer
- Standardize equipment designs
- Square D QO and QOB EPD devices are compatible with standard NQ panelboards and QO load centers
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