OEM Industries RS6-00 NGT00 HLS00 690V 200A aR Spiral-style ceramic square tube line protection

690 V aR Circuit Protector

This 690 V aR spiral-style ceramic square tube provides line protection for industrial and commercial electrical systems. Rated at 200 A, it is built for circuits that demand fast-acting fault interruption. The ceramic body and spiral element suit high-voltage distribution panels and generator feeders. It is intended for qualified electricians and maintenance teams specifying aR-class overcurrent devices.

Not for low-voltage or gG applications

This protector suits installations that require aR characteristic curves at 690 V and 200 A. Buyers who need a general-purpose gG fuse or a device rated below 690 V should look elsewhere. It does not fit holders designed for cylindrical or blade-type fuses. Systems requiring coordinated selectivity with downstream breakers not rated for aR curves may need a different protection strategy.

200 A continuous headroom

The 200 A rating handles sustained loads up to that value while clearing short-circuit faults rapidly. It runs out when fault currents exceed the aR interrupting capacity defined for the series or when the application calls for a higher voltage rating than 690 V. Continuous operation above 200 A or in ambients beyond the ceramic tube’s thermal limits will require a larger frame size.