Group installation

For 240 V systems:

Suitable for group installation on a circuit capable of delivering not more than 18,000 rms symmetrical amperes when protected by 25 A maximum nonsemiconductor fuses, Class RK5 and delivering not more than 5,000 rms symmetrical amperes when protected by 25 A maximum inverse time circuit breakers.

For 500 V systems:

Suitable for group installation on a circuit capable of delivering not more than 18,000 rms symmetrical amperes when protected by 25 A maximum nonsemiconductor fuses, Class RK5 and delivering not more than 5,000 rms symmetrical amperes when protected by 25 A maximum inverse time circuit breakers.