La Marzocco Solid State Relay 25A – Crydom CSW2425P with Thermal Paste (E.4.010)

La Marzocco Solid State Relay 25A – Crydom CSW2425P with Thermal Paste (E.4.010)

Replace a faulty solid state relay (SSR) on your La Marzocco espresso machine with this genuine OEM replacement. La Marzocco part number E.4.010, this Crydom CSW2425P SSR controls the heating element circuit, switching the boiler element on and off in response to the PID temperature controller. Supplied with thermal paste for correct installation.

Specifications

• Part Number: E.4.010
• SSR Model: Crydom CSW2425P
• Type: Solid State Relay (SSR)
• Input: 3–32V DC
• Output: 240V AC, 25A
• Supplied With: Thermal paste
• Compatible Brand: La Marzocco
• Weight: 0.2 kg
• Condition: New / Genuine OEM
• Vendor: La Marzocco

Compatible Models

• La Marzocco FB70 (V5.5, V5.6)
• La Marzocco FB80 (V5.0, V5.1, V5.2)
• La Marzocco GB5 (V5.0, V5.1, V5.2, V5.3)
• La Marzocco GS3 (V2.8, V3.0, V3.2, V3.3)
• La Marzocco KB90 (V1.0, V1.1)
• La Marzocco Leva 90 (V1.3, V1.4)
• La Marzocco Leva S (V1.3, V1.4)
• La Marzocco Leva X (V1.3, V1.4)
• La Marzocco Linea (V5.5, V5.6)
• La Marzocco Linea Mini (V1.3, V1.4, V1.5, V1.6)
• La Marzocco Linea PB (V2.3, V3.0, V3.2)
• La Marzocco Strada AV (V1.5)
• La Marzocco Strada EE (V1.8)
• La Marzocco Strada EP (V2.4, V1.2, V1.3)
• La Marzocco Strada EP 1GR (V1.2)
• La Marzocco Strada MP (V3.2)

Symptoms of a Faulty Solid State Relay

• Boiler not heating up or not reaching set temperature
• Machine constantly overheating or heating element not switching off
• PID showing correct temperature but heating element not activating
• SSR visibly burnt or damaged

Frequently Asked Questions

What does a solid state relay do in an espresso machine?

A solid state relay (SSR) acts as an electronic switch between the PID temperature controller and the boiler heating element. When the PID determines the boiler needs more heat, it sends a low-voltage DC signal (3–32V) to the SSR, which switches on the mains AC circuit (240V 25A) to power the heating element. SSRs have no moving parts and fail silently — a failed SSR is a common cause of a machine that no longer heats up.

Why is thermal paste included?

Thermal paste must be applied between the SSR and its mounting surface (heatsink or chassis) to ensure efficient heat transfer. Without it, the SSR overheats and fails prematurely. Always apply fresh thermal paste when installing a replacement SSR.

What is the Crydom CSW2425P?

Crydom is a leading manufacturer of solid state relays used in commercial and professional espresso machines. The CSW2425P is a panel-mount SSR rated at 240V AC output and 25A load current, with a 3–32V DC control input — the standard specification used across many La Marzocco machine variants.