Hydronic Switching Relays

Hydronic Switching Relays optimize zone control in heating/cooling systems for efficiency and comfort.

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Tekmar® 306P

PN: 689381

UPC: 779655030600

MPN: 306P

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Taco® SR502

PN: 245729

UPC: 68775285755

MPN: SR502

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Taco® SR501

PN: 310045

UPC: 68775285757

MPN: SR501

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Caleffi Z-one™ ZVR106

PN: 306197

MPN: ZVR106

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Taco® SR506-4

PN: 309444

MPN: SR506-4

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This product is obsolete. View replacement products.

Caleffi Z-one™ ZSR104

PN: 306190

MPN: ZSR104

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Caleffi Z-one™ ZSR101

PN: 407215

UPC: 8016615438109

MPN: ZSR101

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Tekmar® 302P

PN: 711123

UPC: 779655030204

MPN: 302P

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Caleffi Z-one™ ZSR103

PN: 306189

MPN: ZSR103

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Honeywell RA89A1074/U Switching Relay

PN: 447797

UPC: 085267990080

MPN: RA89A1074/U

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Taco® SR504-5 4 Zone Next Generation Switching Relay, Expandable

PN: 310115

UPC: 68775285760

MPN: SR504-5

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Honeywell RA832A1066/U Switching Relay

PN: 64257

UPC: 085267990066

MPN: RA832A1066/U

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Taco® SR503

PN: 309220

UPC: 68775285756

MPN: SR503

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Tekmar® 003

PN: 19211

UPC: 779655000301

MPN: 003

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Taco® SR503-EXP-4

PN: 407425

UPC: 687752857597

MPN: SR503-EXP-4

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Taco® SR504-EXP-4 SR 4 Zone with Priority Switching Relay

PN: 417142

MPN: SR504-EXP-4

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Taco® SR506-5 6-Zone Switching Relay with Priority, Expandable

PN: 501457

MPN: SR506-5

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Hydronic Switching Relays are essential components in hydronic heating and cooling systems, facilitating the efficient control of multiple zones. These relays enable seamless communication between thermostats and heating equipment, ensuring optimal performance and energy savings. Designed for reliability and ease of installation, they enhance system functionality while maintaining comfort in residential and commercial applications.