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allowing for field replacement without removing the entire damper frame from the ductwork
This HVAC ventilation fan is balanced to industrial standards
and hot water systems
ensuring internal motor components remain shielded from vertical precipitation
the housing provides clear physical separation between control and high-voltage wiring
Hoffman Controls 905-347/480 Power Switch 30067439-890 allowing for field replacement withoutThe Hoffman Controls 905 347 480 is a high performance, single phase SCR power switch specifically engineered for resistive heating applications within industrial and commercial HVACR systems. Operating at 347 480V with a 28A capacity, this unit utilizes advanced zero firing logic to connect resistive loads to line voltage while significantly reducing radio frequency interference (RFI). Designed as a direct, electrically compatible upgrade for the
US$ 474.50
US$ 174.50
US$ 474.50
US$ 124.50
