Sprecher and Schuh CA4 Contactors



Sprecher & Schuh CA4 Contactors

	General Information
	Contactor Selection Chart
	Starter Selection Chart
	Accessories - Field Installable
	Overload Codes
	Technical Data
	Dimensions
	Complete Series Specifications (14 Pages)


Miniature contactor and starter system
Sprecher + Schuh’s CA4 Series of miniature contactors and starters provide an extremely compact and reliable method of controlling motors of 5 HP or less (@460V). The CA4 is an economical choice for applications where space is limited or where a minimal enclosure is desired.

Small but rugged

Even though their contacts and coils are not replaceable, Sprecher + Schuh has subjected this series of contactors to monitored endurance tests that demonstrate their ruggedness. At full load, under 3-phase power, the contacts in the CA4 have an electrical life of 700,000 operations, while the AC magnet system has a mechanical life of 10,000,000 operations.

Accessories require no additional panel space

The entire CA4 System is logically engineered. Modular accessories like auxiliary contact blocks and timing elements snap-on without increasing the CA4’s original width of 45mm. Also, due to its sideways switching movement, the basic contactor has the same low profile whether an AC or DC operating magnet is used. This permits the use of enclosures with shallow mounting depths. Once the CA4 is installed, all auxiliary contact blocks can be snapped-on or removed without changing any existing power wiring.

Effortless installation

Both the CA4 Contactor and the CAT4 Starter are DIN-rail mountable for instant installation and modification. Fittings are also included on the CA4 for base mounting.

International standards and approvals

All Sprecher + Schuh contactors are UL-listed and CSA-approved. They also carry the CE mark and meet IEC 9471 requirements. They are approved in virtually every international market.