200 amp switch

[petersonra]

Anyone know of switch rated for 200 amps? Not a disconnect switch or a transfer switch. 600vac.

Customer wants a load bank with direct switches instead of contactors. Never ran into this before.

 

[Jraef]

Anyone know of switch rated for 200 amps? Not a disconnect switch or a transfer switch. 600vac.

Customer wants a load bank with direct switches instead of contactors. Never ran into this before.

Rotary switches are available that size from most of the major players. You could also use molded case switches, ie breakers with no trip mechanism. For a laod bank switch with no means of remote operation, I might prefer that option because you can use a UVR on them that can be tied to an E-Stop panic button in case something goes wrong.

 

[Pharon]

You could also use molded case switches, ie breakers with no trip mechanism.

From what I understand, molded case switches do still have a magnetic (i.e. instantaneous) trip mechanism, per their UL Listing requirements. But I could be wrong. Maybe someone else with more knowledge could verify this.

 

[augie47]

From what I understand, molded case switches do still have a magnetic (i.e. instantaneous) trip mechanism, per their UL Listing requirements. But I could be wrong. Maybe someone else with more knowledge could verify this.

Only know what I read... This is from Bussmann-Copper:
Molded Case Switches As listed to UL 489
These switches are very similar to molded case thermal magnetic circuit
breakers except that they have no thermal overload protection. They may or
may not be equipped with a ?magnetic? instantaneous trip as a self-protect
mechanism. They may be used on service equipment, panelboards,
switchboards, industrial control equipment, motor control centers, motor
branch circuits, etc. They are suitable for use as a motor circuit disconnect per
NEC? 430.109. They may be used as a motor controller (On-Off function) to
meet NEC? Article 430 Part VII, and as both a motor disconnecting means
and motor controller to meet NEC? 430.111.

 

[Jraef]

From what I understand, molded case switches do still have a magnetic (i.e. instantaneous) trip mechanism, per their UL Listing requirements. But I could be wrong. Maybe someone else with more knowledge could verify this.

No you're right, they do sort of, but it will have what is called a "magnetic release / override" (they don't use the word "trip" for legal reasons) factory set for the breaking capacity of the switch, usually 10x the current rating. So a 200A MCS will have a magnetic release at 2000A. But you can't use that in any kind of coordination study, that's why they won't call it a "trip".