Schneider Electric Class 615 dimensions Reflex Tripping, Ka Rms

Compact® NSF and NSJ 150 to 600 A Circuit Breakers

Section 13—Supplementary Technical Information

REFLEX TRIPPING

All Compact® NS circuit breakers and switches incorporate the exclusive reflex tripping system.

This extremely simple system breaks very high fault currents by mechanically tripping the device via a "piston" actuated directly by the pressure produced in the breaking units resulting from a short circuit.

For high short-circuit thermal withstand, this system provides a faster break. Reflex tripping curves are exclusively a function of the circuit breaker rating.

06153221

20

NSJ600

NSJ400**

10TM70DP...TM250DP

t8

(ms) 7 TM15DP...TM60DP

6

5	NSF250
4

NSF150*

3

2 3 4 6 10 20 30 40 60 100 200

I (kA RMS)

*4P OSN Compact® NSF125/250N and NSF 150/250N Ratings Are Same As NSF250 ** 4P OSN NSJ 400/600N Ratings Are Same As NSJ600

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