• Taco SR504 Switching Relay
  • Taco SR504 Switching Relay — New England Supply House spec card [NESH-SPEC-CARD-V2]
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Taco SR504 Switching Relay

Taco SR504 Switching Relay

$296.71 USD
$296.71 USD
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The Taco SR504 Switching Relay is a compact, reliable 4-zone switching relay designed for boiler, circulator, and hydronic system control. With electronic actuation and a DPDT switch, it delivers precise, dependable zone management. This fully enclosed unit measures 12-1/4" W x 3" D x 8" H and is rated for 120V AC at 60 Hz with a 1/3 HP input, plus current ratings of 20A combined, 6A full load, and 36A locked rotor.

Key features and compatibility:

  • 4-zone switching relay with electronic actuation for boilers, circulators, and hydronic systems.
  • DPDT switch with an external indicator light and switchable priority for flexible control.
  • Simplified wiring through a fully enclosed snap-out relay, compact design, and fuse protection.
  • 24V AC control with a 1 A isolated end switch and 24V power input/output terminals, plus universal thermostat compatibility.
  • Rugged, compliant enclosure UL/CSA listed and housed in a NEMA 1 enclosure for dependable, contractor-friendly operation.

Specifications

Type4-Zone
Input Supply1/3 HP, 120 Volt AC at 60 Hertz 1-Phase
Current Rating20 Amp (Combined Load), 6 Amp (Full Load) and 36 Amp (Locked Rotor)
ApplicationBoiler, Circulator, Hydronic System
StandardsUL, CSA
IncludesExternal Indicator Light, Switchable Priority, Simplified Wiring, Fully Enclosed Snap-Out Relay, Compact Design, Fuse Protected, 24 Volt AC 1 Amp Isolated End Switch, Contractor Friendly PC Board Layout, 24 Volt AC Class 2 Universal Thermostat Compatibility, 24 Volt Power Input/Output Terminal
Actuation TypeElectronic
Switch TypeDPDT