La Marzocco High Temperature Limit Switch 130°C – L276.01

This is a genuine OEM La Marzocco high temperature limit switch (thermostat), part number L276.01 / LAML276.01. The high temperature limit switch is a safety device mounted on the boiler — it trips and cuts power to the heating element if the boiler temperature exceeds 130°C, protecting the machine from thermal runaway and component damage. Unlike a standard thermostat, this is a trip-free safety device, meaning it cannot be reset while the fault condition is still present.

Technical Specifications

• Part number: L276.01 / LAML276.01
• Trip temperature: 130°C
• Type: Trip-free (safety thermostat)
• Application: Boiler high temperature safety cutout
• Weight: 200g

Compatible La Marzocco Espresso Machine Models

• GB5
• GS3
• KB90

This part may also fit additional La Marzocco models. Contact our technicians with your machine’s model and serial number to confirm compatibility before ordering.

What Does the High Temperature Limit Switch Do?

The high temperature limit switch is a critical boiler safety component. Under normal operation it remains closed (allowing current to flow to the heating element). If the boiler overheats beyond 130°C — due to a failed thermostat, low water level, or scale buildup — the limit switch trips open, cutting power to the element and preventing damage. Because it is trip-free, it will not reset until the fault is identified and the machine has cooled, preventing accidental restart under unsafe conditions.

When Should You Replace the Temperature Limit Switch?

Replace this limit switch if your La Marzocco machine is showing any of the following: the machine has no heat and the main thermostat tests as functional, the limit switch has tripped and will not reset after cooling, continuity testing across the switch terminals shows an open circuit, or the switch body is visibly damaged or corroded.

Important: Diagnose Before Replacing

A tripped limit switch is a symptom, not always the root cause. Before replacing, investigate why it tripped — common causes include a failed main thermostat, low water in the boiler, or heavy scale buildup on the heating element. Replacing the limit switch without addressing the underlying fault may result in it tripping again. Bear Coffee Machine can perform a full boiler diagnostic if needed.

Frequently Asked Questions

What is the difference between a thermostat and a high temperature limit switch? A thermostat actively regulates temperature by cycling the heating element on and off during normal operation. A high temperature limit switch is a one-shot safety device — it only activates if the boiler exceeds a dangerous temperature threshold, and is trip-free so it cannot be bypassed while the fault persists.

Is this a genuine La Marzocco part? Yes — this is a genuine OEM La Marzocco component (part number L276.01 / LAML276.01) meeting La Marzocco’s quality standards.

Can Bear Coffee Machine diagnose and replace this for me? Yes — we offer in-house repair and servicing for La Marzocco machines. Contact us to arrange a booking.