Pool & Spa Light Transformers

Blue Square®’s low-voltage pool and spa transformers are designed for illumination in or around swimming pools, spas, and fountains. Featuring heavy-duty magnetic cores, these units offer safe, efficient, and quiet operation. Constructed with marine-grade stainless steel enclosures for long-term durability. Each unit includes 13V and 15V wiretaps with clamp-connect terminal blocks for fast, easy, and secure wire connections. Blue Square®’s pool and spa transformers are compatible with most pool automation brands and are also capable of being controlled via toggle switch. ETL Listed for pool and spa safety standards.

Requires hardwired line-voltage(120V) installation (licensed electrician recommended).

Backed by Blue Square®’s 5-Year Warranty.


  • Housing: Stainless Steel Casing

  • Power Cord: Requires hardwired line-voltage(120V)installation (licensed electrician recommended)

  • Input Voltage: 120V 60Hz

  • Voltage Taps: 13 & 15 VAC (UL 1838 compliant)

    • Secondary Circuit Protection:150W & 300W: Auto Resettable fuse
  • Maximum Draw: Max 150W 12.5A and 300W 25A

Features & Benefits

  • 150W or 300W capacity

  • 15V Tap option helps eliminate voltage drop

  • Dual Stage Capable (use both 13V & 15V simultaneously)

  • Quick-Connect tabs (easier than wire nuts – saves time!)

  • Highly efficient EI core – runs cooler, generates less noise, with less voltage loss under load.

  • Unique color-coded wire markers for easy maintenance and troubleshooting.

  • Stainless steel body with removable face plate.

  • Magnetic circuit breaker; auto reset integrated thermal breaker (in core).

  • ETL Listed for both indoor and outdoor use.

Installation Guide

Transformer Installation Guide