Features:

• Provides motor overload, ground fault and short-circuit protection. When used in circuits subject to surge currents such as those caused by motors, transformers and other inductive components, these fuses can be sized close to full-load amps to give maximum overcurrent protection.

• Permits the use of smaller and less costly switches. The time-delay feature makes it possible to use fuse amp ratings which are much smaller than those of non-time delay fuses. Considerable cost saving occurs by permitting the use of smaller size switches, panels and fuses themselves.

• Provides a higher degree of short-circuit protection (greater current-limitation) in circuits in which surge currents or temporary overloads occur.

• Helps protect motors against burnout from overloads
• Gives motor running back-up protection to motors without

extra costs
• Helps protect motors against burnout from single phasing

on three phase systems
• Simplifies and improves blackout prevention

(selective coordination)
• Dual-element fuses can be applied in circuits subject to

temporary motor overloads and surge currents to provide both high-performance, short-circuit and overload protection

• The overload element provides protection against low level overcurrent of overloads and will hold an overload which is five times greater than the amp rating of the fuse for a minimum of ten seconds

Recommended Fuse Blocks

For additional information on the R600 Series of 600 volt fuse blocks, see Data Sheet # 1111.