Electrical Specifications
Pressure Devices, Inc. Pressure Devices, Inc.
Pressure Devices, Inc.
Tel:1-864-638-5491
1-800-833-2240
Fax: 1-864-638-7562

Circuit Definitions

Form C is standard; others optional
Note: Snap action microswitches used in most PDI Model Switches are UL & and CSA recognized.
Form A - SPST-NO
Single Pole - Single Throw
Normally Open
Form AA - DPST-NO
Double Pole - Single Throw
Normally Open
Dual Setting Only Consult factory
Form B - SPST-NC
Single Pole - Single Throw
Normally Closed
Form BB - DPST-NC
Double Pole - Single Throw
Normally Closed
Dual Setting Only Consult factory
Form C - SPDT
Single Pole - Double Throw
Form CC - DPDT
Double Pole - Double Throw
Dual Setting Only Consult factory
Form X - SPST-DB-NO
Single Pole - Single Throw
Double Break
Normally Open
Form XX - DPST-DB-NO
Double Pole - Single Throw
Double Break
Normally Open
Form Y - SPST-DB-NC
Single Pole - Single Throw
Double Break
Normally Closed
Form YY - DPST-DB-NC
Double Pole - Single Throw
Double Break
Normally Closed
Form Z - SPDT-DB
Single Pole - Double Throw
Double Break
Form ZZ - DPDT-DB
Double Pole - Double Throw
Double Break

 

 

Further info on double and along with single
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