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Disconnect Switches

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About Disconnect Switches

Disconnect switches rapidly disconnect from power supplies in the event of an emergency. They may be categorized as fusible, non-fusible, enclosed fusible, and enclosed non-fusible switches. Fusible switches support the installation of fuses and provide a greater degree of protection. Non-fusible switches do not. Some disconnect switches are suitable for AC systems. Others are designed for DC systems. Products for single-phase and three-phase power are also available. 

Disconnect switches can function in conjunction with circuit breakers, devices which interrupt the flow of electricity along a circuit when the current exceeds the circuit’s capacity.  For example, a battery disconnect switch is a knife switch that prevents unwanted drain from a vehicle battery when the vehicle isn’t in use or is in storage. The battery-disconnect switch installs over either the positive or negative terminals on the battery. Another type of battery disconnect switch comes with a removable knob to protect a vehicle from being stolen when it is parked in a public garage for long periods.

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Engineering Web: Disconnect Switches

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on a pole vertically, and disconnect between overhead crossarm vertically and underground lines, or as a visible disconnect for mainte- SID nance of
Disconnect Switches Non-Fusible Fusible Low Voltage Disconnect...
Disconnect Switches Non-Fusible Fusible Low Voltage Disconnect Switches from ABB ABB is committed to offering high quality and innovative low voltage
Disconnect Switches | Business.com
Disconnect Switches Home » Directory » Industrial Goods & Services »
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Part Numbers for Disconnect Switches

Part # Distributor Manufacturer Product Category Description
19212-11 Digi-Key American Electrical Inc Switches SWITCH DISCONNECT 32A 600V RED
19203-11 Digi-Key American Electrical Inc Switches SWITCH DISCONNECT 40A 600V BLACK
BDNF200A Digi-Key Cooper/Bussmann Switches SWITCH DISCONNECT 200A 1000V
BDNF600A Digi-Key Cooper/Bussmann Switches SWITCH DISCONNECT 800A 1000V
SCV400   Automationdirect.com Switches Disconnect switch, non-fusible, 400A rating, 250 hp at 480V, UL 98 rated

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