Switches

This category covers the physical control and protection components used in motorsport electrical systems — pushbutton switches, mil-spec toggle switches, fuse holders, strip-link fuses, battery isolators, and switch covers. These components are fitted at the driver interface, in the fuse panel, and at the battery circuit — the points in a race car harness where human-rated durability, vibration resistance, and current handling are the determining factors.

XTRA Motorsport stocks OTTO pushbuttons, Honeywell mil-spec toggles, MTA fuse products, and a solid-state battery isolator rated at 150A continuous.

Pushbutton Switches

OTTO Engineering pushbuttons are mil-spec rated momentary switches designed for panel mounting in demanding environments. The flush dome actuator sits below the panel surface, reducing accidental activation. IP67 sealing makes them suitable for exposed dash positions or external panel locations that may be exposed to wash-down or rain ingress.

• OTTO Pushbutton 5A Flush Dome, Black — IP67, momentary, 5A. Standard fitment for start buttons, map switches, and auxiliary function inputs.
• OTTO Pushbutton 5A Flush Dome, White — same specification in white. For panel layouts using colour coding to differentiate switch functions.
• Push Button 15A — 15A momentary pushbutton. For higher-current direct-switch applications such as starter circuit activation.

Toggle Switches

The Honeywell Mil-Spec Toggle Switch 1 Pole, OFF-ON is a MIL-SPEC rated single-pole toggle designed for panel mounting in race cars and aircraft-derived electrical systems. Mil-spec toggles provide a positive physical state indication — the lever position is unambiguous, unlike a pushbutton with a recessed LED. Used for ignition switches, fuel pump master switches, and any circuit where the driver needs a clear visual confirmation of switch state.

Fuses and Fuse Holders

MTA Striplink fuses and the matching Midival fuse holder provide a compact blade-style fuse solution for motorsport harnesses. Striplink fuses are rated for vibration environments and connect directly to the Midival holder without loose individual fuse elements.

• MTA Striplink Fuse 30A — 30A strip fuse for medium-current circuits such as fan relays, fuel pumps, and ECU power feeds.
• MTA Striplink Fuse 50A — 50A strip fuse for high-current circuits.
• MTA Midival Fuse Holder for Striplink Fuse — panel or loom-mount holder accepting Striplink fuses. Provides a secure, vibration-resistant fuse installation without a full fuse box.

Battery Isolator

The Motorsport Battery Isolator 150A is a solid-state battery disconnect rated at 150A continuous. Solid-state construction eliminates the mechanical contact wear common in rotary battery cut-off switches, and there are no moving parts to fail under vibration. Required by most circuit and rally regulations as an external circuit breaker accessible from outside the vehicle — check your series regulations for the required mounting position and marking.

Switch Covers

The RRS On/Off Switch Protection Cover — Carbon is a flip-guard cover for standard panel-mount toggle switches. It prevents accidental activation of critical switches — ignition, kill switch, fire suppression — by requiring a deliberate two-step operation: lift the guard, then operate the switch. Carbon finish. Required in some series regulations for specific switches.

FAQ

What current rating do I need for a motorsport pushbutton switch?

For signals to a PDM, ECU input, or relay coil, 5A is sufficient — these circuits draw milliamps in normal operation. The 5A OTTO pushbuttons cover the majority of panel switch functions. Use the 15A pushbutton only where the switch is directly switching a higher-current load without an intermediate relay or PDM output — for example, a starter solenoid on a simple circuit without relay control.

Are these switches suitable for external panel positions exposed to rain?

Yes, for the OTTO flush dome pushbuttons, which are rated IP67 (submersion to 1 metre). The Honeywell mil-spec toggle is also rated for harsh environments. MTA Striplink fuse holders and the battery isolator should be mounted in a protected location — they are not designed for direct water exposure.

Does the 150A battery isolator meet FIA or MSA kill switch regulations?

The solid-state isolator provides the disconnect function required by most national and international circuit regulations. Before fitting, verify that your specific series regulations specify whether a rotary mechanical isolator or a solid-state equivalent is acceptable, and confirm the required external actuator type (ring pull, paddle, etc.) and position. Regulations vary between series.

What is the difference between a Striplink fuse and a standard blade fuse?

A Striplink fuse is a format-specific blade fuse designed to clip directly into the MTA Midival holder without a separate housing. Mechanically, it functions as a standard blade fuse — a calibrated fusible element that opens at the rated current. The Striplink format is preferred in motorsport for its positive retention in the holder under vibration, where standard blade fuses in automotive-type holders can work loose.