Collection: Spa Electrical

Spa electrical parts are what stand between you and a tub that boots up, holds heat, and switches loads on demand. Our spa electrical components collection covers the unglamorous parts that fail first when a hot tub starts misbehaving: fuses, relays, contactors, transformers, terminal blocks, GFCI components, cord sets, and the rocker, toggle, and slide switches that wire into spa pack control boards. Brands include Hydro-Quip, Balboa, Sundance, T-92, and other OEM-grade replacements.

A blown spa fuse is usually a symptom, not the disease — but it's a five-minute fix that can save a $400 control board if you catch it early. Common culprits: a 30A T-92 DPST relay welded by a surge, a 12V transformer that finally cooked after a decade of duty cycling, or a GFCI breaker that's been nuisance-tripping because the heater element is leaking to ground (heater swaps live in our Spa Heaters collection). Always pull the spa pack model number before ordering relays — Balboa BP packs, Hydro-Quip CS-series, and Sundance LX systems use different relay footprints. UL 1563 is the safety standard for hot tub electrical components if you want to confirm a replacement meets the same certification.

When you're sourcing a spa transformer, match the input voltage (115V, 230V, or dual), output voltage (typically 12V or 24V for spa light and ozonator circuits), and connector style — molded plugs are common on Hydro-Quip wet-end transformers, while bare-wire or screw-terminal styles are standard on Balboa. Receptacles, cord sets, and adapter cords for pump and accessory ports are also stocked here; for the spa pack the receptacles plug into, see our Spa Packs collection. Balboa's service portal publishes color-coded receptacle charts for every BP-series pack.

Shop the full spa electrical lineup below — fuses, relays, transformers, switches, and cord sets all ship from one of our ten U.S. warehouses so the tub is back in service before the weekend.