Zodiac - Relay 12A 230V 2 changeover contacts for heating priority - B0217600A

Zodiac – Relay 12A 230V 2 changeover contacts for heating priority – B0217600A

The Zodiac B0217600A is a genuine replacement relay designed for use within Zodiac pool heating and filtration control systems. Rated at 12A and 230V with 2 changeover contacts, this relay is specifically engineered to manage heating priority switching — ensuring that when a heating demand is detected, the system correctly redirects electrical control signals to activate or deactivate connected heating equipment. As an original spare part, it is built to the same electrical and mechanical tolerances as the component originally installed in your Zodiac control unit, making it a direct like-for-like replacement.

The relay operates by physically switching circuits through electromagnetic action. With 2 changeover contacts, it can simultaneously manage two independent circuits — for example, coordinating between filtration pump operation and a heating system to enforce priority logic. The 12A current rating ensures compatibility with standard 230V European mains-connected control circuits found in Zodiac pool automation and heating management units. The 230V coil voltage means the relay is driven directly by the control board supply without the need for additional voltage conversion.

Technical characteristics and compatibility

This relay is identified in the official Zodiac spare parts catalogues (2018 and 2020 editions) under reference B0217600A, confirming its status as an authorised spare part. It is listed in connection with Zodiac heating control assemblies, and is compatible with Zodiac pool heating control systems that incorporate a heating priority function. The changeover contact configuration — also known as DPDT (Double Pole Double Throw) — provides flexibility in wiring, allowing both normally open and normally closed positions to be used depending on the control logic of the host unit. This makes the component suitable for systems where fail-safe operation is critical.

Installation requires access to the control unit housing of your Zodiac system. The relay is a plug-in or screw-terminal mounted component and should be replaced by a qualified pool technician or electrician familiar with low-voltage control wiring. Always isolate mains power before servicing any internal components of your pool control unit.

Suitability and application

This relay is intended exclusively for Zodiac pool control and heating systems that use the B0217600A relay as part of their heating priority circuit. It is not a universal relay and should only be fitted as a direct replacement in systems where this exact reference is specified. If your Zodiac heating controller is failing to switch heating correctly, exhibiting erratic heating priority behaviour, or has a visibly damaged or burned relay on the control board, replacing this component with the genuine B0217600A is the recommended first step. Suitable for indoor and outdoor Zodiac control enclosures operating on a standard 230V European supply.