Grant Boiler Momentry Switch Wps108 6 Spade

double pole on/off Spi

Grant Momentary Switch – WPS108 (6 Spade Terminals)

Genuine Boiler Control Switch for Grant Spira and Biomass Boilers

The Grant WPS108 Momentary Switch is a genuine replacement part used in the control circuits of Grant biomass boilers, particularly within the Spira range. Featuring 6 spade terminal connections, this switch is typically used for control panel interaction, allowing safe and responsive operation of key boiler functions.

This component is crucial for the reliable activation of control features such as ignition reset or manual override. If your boiler's interface is unresponsive or the existing switch is physically worn or broken, the WPS108 is the trusted OEM replacement to restore functionality.

 Key Features & Benefits

• Official Grant Part – WPS108
  Manufacturer-approved for use in Grant Spira and related systems.

• Momentary Action Functionality
  Switch returns to default position after being pressed—ideal for resets or command inputs.

• 6 Spade Terminal Configuration
  Allows easy and secure wiring within the boiler’s control panel.

• Durable Construction
  Designed for high-usage environments with a reliable contact mechanism.

• Easy to Install
  Straightforward replacement for existing panel-mounted switches.

Compatible Grant Boiler Models

The WPS108 Momentary Switch is commonly found in:

• ? Grant Spira 5-26kW Biomass Boilers

• ? Other Grant models using a 6-terminal momentary push switch in the control panel

Check your boiler’s wiring schematic or contact us for compatibility confirmation if unsure.

 When to Replace the WPS108 Switch

Replace this switch if:

• The control panel button is sticking or unresponsive

• You experience intermittent control faults or input errors

• The switch is physically damaged, loose or cracked

• You’re conducting a control panel rebuild or servicing

A working switch is essential for safe and accurate user interaction with the boiler system, especially for triggering resets or key functions.

Technical Specifications

• Part Number: WPS108

• Manufacturer: Grant UK

• Switch Type: Momentary push button

• Connections: 6 spade terminals

• Function: Control/reset input

• Application: Grant boiler control panels

• Material: High-grade plastic body with metal terminals

• Mounting: Panel-mounted (snap or screw fit, depending on design)