Honeywell and Taco Switching Relays
Taco switching relays are used to control the operation of circulator pumps via 24V thermostats (zoning with circulators). Available in regular models (SR501, 502, ..., 506), which allow to control up to 6 circulators and expandable models (SR503-EXP, 504-EXP, 506-EXP) which can be linked together to control up to 20 circulators. Features installed-friendly PC board layout, simplified wiring and external LED diagnostics.
Taco PC600 series add-on controls can be used in combination with any expandable Taco switching relays and offer extra features and added system versatility.
Taco switching relays are compatible with all major brands of circulator pumps (Taco, Grundfos, Armstrong, Wilo) and thermostats (Honeywell, White Rodgers, Robertshaw, etc.)