HVAC Transformers

Single-phase control transformers for HVAC equipment control circuits. VA ratings run 40, 48, 50, 75 and 100, with primaries covering 120 V, 208/240 V, 240/480 V, 277 V, and multi-tap 120-208-240 V and 120-208-240-480 V. Several list a 24 V secondary.

Size the transformer to the total VA draw of everything on the secondary — contactor coil, gas valve, thermostat, damper motor, condensate pump — not to the one component that failed. 40 VA is the most stocked size here, but adding a zone panel or a powered humidifier can push a control circuit past it. Multi-tap primaries let a single part cover 120, 208 and 240 V equipment, and in the 75 VA multi-tap, 480 V as well. Brands include TRADEPRO, MARS, JARD, Beckett, Honeywell Home and AprilAire.

HVAC Transformers

Gree Transformer Single Phase 43110270

Factory Authorized Parts Transformer 43110030

Non-Branded Transformer 41X26.5 43110258

AprilAire® Transformer Single Phase 4010

Honeywell Home Transformer Single Phase AT140A1042/U

MARS Transformer Single Phase 208/240V 50VA 50314

MARS Transformer Single Phase 277V 48VA 50306

Bosch Transformer 8-733-951-083

MARS Transformer Single Phase 120V 40VA 50302

Non-Branded Transformer Single Phase 14-0378-0005

MARS Transformer Single Phase 208/240V 50VA 50380

MARS Transformer Single Phase 208/240V 40VA 50304

MARS Transformer Single Phase 120V 40VA 50362

MARS Transformer Single Phase 208/240V 40VA 50363

JARD Transformer 240/480V 50VA M44511

MARS Transformer Single Phase 120V 40VA 50352

Beckett Transformer 120 VAC Single Phase 51771U

MARS Transformer Single Phase 240/480V 100VA 50341

MARS Transformer Single Phase 240/480V 50VA 50327

JARD Transformer Single Phase 24V 40VA 44504

MARS Transformer Single Phase 240/480V 75VA 50321

MARS Transformer Single Phase 208/240V 40VA 50354

TRADEPRO® Transformer Single Phase 120-208-240/24V 50VA TP-50VA-A

TRADEPRO® Transformer Single Phase 120-208-240-480/24V 75VA TP-75VA-MULTI-A

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