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TACO Zone Switching Relay: Expandable Switching, 4 Zones, 120V AC Primary - Zone-Switching Relays
TACOZone-Switching Relays

TACO Zone Switching Relay: Expandable Switching, 4 Zones, 120V AC Primary

The TACO Zone Switching Relay: Expandable Switching (MPN SR504-5) is a zone-switching relay with 4 zones with priority, rated at 20 A @ 120V AC. It operates with a 120V AC primary and 24V AC secondary. This product…

SKU 3G-OTH-67203

Also listed as: SR5045 · SR504 5

Brand
TACO
Item
Zone Switching Relay: Expandable Switching, 4 Zones, 120V AC Primary
Category
Zone-Switching Relays
Available to Order
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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

TACO
Manufacturer Part Number
SR504-5
Zones
4
AC Primary
120V
Number of Zones
4 With Priority
AC Secondary: Switching
24V
Current Ratings @ Voltages
20 A @ 120V AC

Technical Documents

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TACO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The TACO Zone Switching Relay: Expandable Switching (MPN SR504-5) is a zone-switching relay with 4 zones with priority, rated at 20 A @ 120V AC. It operates with a 120V AC primary and 24V AC secondary. This product is designed for switching applications in industrial equipment distribution.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the TACO SR504-5 zone switching relay used for?

The TACO SR504-5 zone switching relay is used to control up to four heating or cooling zones in HVAC systems, with priority zoning for load management. It switches 20 A at 120V AC primary and 24V AC secondary, making it suitable for industrial equipment distribution and commercial building automation.

What are the specifications of the TACO SR504-5 zone switching relay?

The TACO SR504-5 is a 4-zone switching relay with priority, rated at 20 A @ 120V AC primary and 24V AC secondary. It is expandable for additional zones and operates on 120V AC primary power. The manufacturer part number is SR504-5, and it is designed for switching applications in HVAC systems.

Where to buy the TACO SR504-5 zone switching relay worldwide?

You can source the TACO SR504-5 zone switching relay through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations. Contact us for availability and lead time; we provide reliable sourcing for this TACO relay.

How to install the TACO SR504-5 zone switching relay?

Install the TACO SR504-5 by mounting it on a DIN rail or panel, connecting the 120V AC primary and 24V AC secondary as per the wiring diagram. Ensure the 20 A rating is not exceeded. Follow standard HVAC relay installation practices, including proper grounding and zone thermostat wiring. Consult a licensed electrician for compliance.

Used in

Common applications for TACO
Hydronic heating systems — TACO 007 series circulator pumps for residential boiler water circulation.
Commercial HVAC — TACO 2400-60-3P inline pump for chilled water loops in large buildings.
Industrial process cooling — TACO 1630EAE10132096 pump for high-flow (110 gpm) cooling applications.
Zone control in radiant floor heating — TACO V075T2G2ZA024Q4A2 zone valve for regulating flow to individual zones.
Pump replacement and maintenance — TACO 007-045RP cartridge assembly for servicing existing 007 series pumps.
Piping connections in hydronic systems — TACO 110-251F-1 flange for joining pumps to pipework.

TACO Products

3G Electric supplies TACO zone-switching relays. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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