Four-zone switching relay with priority control for hydronic heating systems. Controls up to four independent circulator zones with switchable priority protection, allowing one zone to override others for up to one hour. 120 VAC input, 20 amps maximum combined load. UL listed and compatible with conventional and programmable thermostats.
Taco SR504 Four Zone Switching Relay 120V Priority
Taco
$292.95
In Stock
- OEM / cross-reference
- Caleffi ARM-4P, Argo UPZCP-4, Grundfos Z-one ZSR104
- Fits brands
- Caleffi, Argo, Grundfos
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Taco
Taco SR504 Four Zone Switching Relay 120V Priority
- SKU:
- SR504
- Product Type:
- Switching Relay
- Subcategory:
- Zone Control
- Application:
- Residential/Commercial
- System Type:
- Boiler, Hydronic Heating, Radiant Floor
- Installation Type:
- OEM Replacement
- Voltage:
- 120 VAC
- Voltage Class:
- Line Voltage
- Phase:
- Single Phase
- Amperage:
- 20A
- Control Type:
- Non-Programmable
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