surface corrosion

The SPDT contact configuration allows you to wire the fan to the cooling side of the switch

The 1/2" Belimo ZONE215N-25 is a high-performance 2-way zone valve designed for precision control in hydronic systems

This replacement flame sensor is a standard stock item for service trucks

ODF sweat versions are preferred for R-410A high-side pressures

MARS 50327 Transformer 320788-704 surface corrosionThe MARS 50327 Transformer is a heavy duty 50VA control transformer engineered for versatile voltage step down in commercial and residential HVACR systems. This multi tap primary unit handles 120 208 240 480V input, providing a consistent 24V secondary output to power contactors, relays, and solid state boards. Designed with NEMA Class II construction, it features an open frame design with a manual reset circuit breaker to protect the secondary