Marathon and Kulka Heavy Duty Terminal Block

General Information

Heavy Duty Terminal Blocks are available in two styles, Deadfront Type (1100,1200, 985 and 0987series) and Barrier Type (1500 and 1600 series).

Ratings and Standards
The voltage ratings of terminal blocks are based upon the minimum spacing between electrically conductive parts line to line through air and over surface and line ground through air and over surface.

Class A
Service equipment including deadfront switch-panel boards, service entrance devices.

Class B
Commercial appliances including business equipment, electronic data processing equipment, and the like.

Class C
General industrial and machine tool controls which can be further defined as equipment falling under UL 508. Ratings based on UL 1059 may be higher in some cases depending on application.

	Voltage	Thru Air	Over Surface
Class A	51-150 151-300 301-600	.500 .750 1.000	.750 1.250 2.000
Class B	51-150 151-300 301-600	.063 .094 .375	.063 .094 .500
Class C	51-150 151-300 301-600	.125 .250 .375	.250 .375 .500

Applications

Designed for electrical termination of wire with or without the use of a wire terminal.These rugged terminal blocks are widely used in such industries as traffic control, utilities, switchgear, and other utility related equipment.