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Snap-Action Power Switches

Construction Details

Shallco snap-action switches comprise assemblies of electrically insulated stators and rotors as an integral assembly with a drive mechanism that indexes the rotors in 90 degree increments. The unique drive mechanisms employ stored energy that, when released, provides millisecond "open" and/or "closure" of electrical circuits.

The stationary stator contacts may be "non-shorting", "shorting" or "sweep" depending on appication requirements. The rotor designs allow for 180 degree (straight-across), 90 dgree (right-angle) and multi-blade types for up to four-throw switching.

Stators are premium electrical grade thermoset plastic and stationary contacts are heavy guage copper. The clip-style rotor blades are phospor-bronze riveted to a brass driving washer.

Features

• Positions: 2 to 4, up to 12 poles
• Double wiping contacts, low contact resistance
• Current ratings to 200 amperes
• Rapid make and break action
• AC and DC switching
• Many circuit variations available

Snap Action Catalog PDFs
Series 1 Switches PDF
Series 3 Switches PDF
Series 7 Switches PDF

Circuit Diagrams: Series 1 and Series 3 Snap-Action Switches

Circuit A, single throw Poles Circuit Code 1 A01-4 A01-2 A01-2A 2 A02-4 A02-2 A02-2A 3 A03-4 A03-2 A03-2A 4 A04-4 A04-2 A04-2A

Circuit B, double throw Poles Circuit Code 1 B01-4 B01-2 B01-2A 2 B02-4 B02-2 B02-2A 3 B03-4 B03-2 B03-2A 4 B04-4 B04-2 B04-2A

 

Circuit C, double throw Poles Circuit Code 1 C01-3 2 C02-3 3 C03-3 4 C04-3

Circuit D, double throw Poles Circuit Code 1 D01-4 D01-3 2 D02-4 D02-3 3 D03-4 D03-3 4 D04-4 D04-3

 

Circuit E, triple throw Poles Circuit Code 1 E01-4 E01-3 2 E02-4 E02-3 3 E03-4 E03-3 4 E04-4 E04-3

Circuit F, four throw Poles Circuit Code 1 F01-4 2 F02-4 3 F03-4 4 F04-4

 

Part Number Code

The above tables describe the six basic circuits available for the Shallco Series 1 (10 ampere) and Series 3 (30 ampere) snap-action rotary switches. A complete part number consists of the circuit code prefixed by the "series-number"; "1" for a 10 ampere device and "3" a the 30 ampere device, as in the following example.

 

Outline Dimensions

Series	A	B	C	D	E	F	G	H	J
1	1.64	10-24	.250	.766	.250	-	1.50	8-32	2.50
3	2.281	1/4-20	.375	.937	.250	-	2.75	10-24	4.13