Novaris HSG3 hybrid spark gap

Aimed at applications with high energy and resilient main switchboard (MSB) protection, the Novaris Hybrid Spark Gap HSG3 design principle uses both sealed spark gaps and MOV technology. This achieves consistent performance with no follow-on current that can cause nuisance tripping of circuit breakers. The HSG design also allows for overvoltage tolerance of up to 480 V from line to neutral. This can be useful in areas with unstable grid supply. Typically a product with this level of fault tolerance and surge current handling would have a let-through voltage of around 2000 V. The HSG3-100-480 has a let-through of only 1000 V.

The HSG3 is 80 mm wide and conforms to DIN depth to allow for flush front panel mounting. Monitoring is achieved via an LED for each protection segment and a failsafe voltage-free contact for monitoring via a control system.