- 10 A to 30 A, 1-pole, 5000 AIR 277Vac
- Single handle with internal common trip
- UL Listed 48 Vdc (5000 AIR)
Supplementary protectors offer a cost effective alternative to Miniature Circuit Breakers when branch protection according to Ul489 is not required. The QYU trip characterstics are identical to those of the same amperage QOU circuit breaker.
These devices are designed to provide supplemental overcurrent protection in accordance with Article 240-10 of the 2005 NEC, which states that thermal-magnetic supplementary protectors cannot be used to replace the primary branch-circuit protection in an application. When used in combination with branch-circuit protection, as required in Article 210 of the 2005 NEC, these supplementary protectors can be used to protect lighting fixtures, appliances and other equipment or internal circuits and components of equipment.