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Compact® NSF and NSJ 150 to 600 A Circuit Breakers
Section 5—Switches
© 1995–2003 Schneider Electric All Rights Reserved
18
UL 489 Listed Ratings
IEC 947-3 Ratings
Short-circuit
Withstand Current
Molded case switches are identical to molded case circuit breakers, except they are not equipped with
trip units and sensors. Molded case switches open when the handle is switched to the OFF position or
in response to an auxiliary tripping device such as a shunt trip or an undervoltage release.
These switches open instantaneously at a non-adjustable, factory preset, magnetic trip point calibrated
to protect only the molded case switch itself. Magnetic settings:
• NSF150/250 A switches: 2000 A
• NSJ 400/600 A switches: 6000 A
These switches are suitable for use on a circuit capable of delivering not more than:
• 240 V: 100 kA for NSF switches and 150 kA for NSJ switches
• 480 V: 65 kA for NSF switches and 100 kA for NSJ switches
• 600 V (600Y/347 for NSF switches): 25 kA
Switches are Listed under UL file E103740 and Certified under CSA file LR 88980.
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06153061
Compact
®
Switches NSJ400A NSJ600A
Number of Poles
3, 4, 4P OSN* 3, 4
Rated Voltage (V)
AC 50/60 Hz 600 600
Rated Current (A)
400 600
*Oversized Neutral Protection: four-pole OSN 125/250 and 150/250 are same ratings as NSF250A.
Compact
®
Switches NSF150A NSF250A
Number of Poles
3, 4, 4P OSN* 3, 4
Rated Insulation Voltage (V) Ui
750 750
Rated Impulse Withstand
Voltage (kV)
Uimp
88
Rated Operational Voltage (V) Ue
AC 50/60 Hz 690 690
DC 500 500
Rated Operational Current (V) Ie
AC23A 690 V 400 630
DC23A 250 V 400 630
DC23A 500 V (2 poles in series) 400 630
Making Capacity (kA peak)
7.1 8.5
Short-time Withstand Current
(kA rms)
Icw
Icw (kA rms) 5 8
Duration (s) 3 3
*Oversized Neutral Protection