Telemecanique Thermal Overload Relay 30-40A LR2 D3355

Description

The Telemecanique LR2 D3355 is a robust thermal overload relay designed for reliable motor protection. Part of the renowned TeSys D series, it offers precise and adjustable protection against overcurrents. This unit is engineered for direct mounting on TeSys D contactors, creating a compact and efficient motor starter assembly. It features manual and automatic reset modes, a test function, and a trip indicator for easy diagnostics and maintenance.

Specifications

• Manufacturer: Telemecanique (Schneider Electric)
• Model: LR2 D3355
• Product Type: Thermal Overload Relay
• Current Setting Range: 30-40 A
• Trip Class: Class 10A according to IEC 60947-4-1
• Rated Insulation Voltage (Ui): 1000 V
• Mounting Style: Direct mounting on LC1D40 to LC1D80 contactors
• Contact Configuration: 1 NO + 1 NC

Label Info

• Model: LR2 D3355
• Ui: 1000V, Uimp: 6kV
• Ith: 5A
• Listed 170M Ind. Cont. Eq. for use with contactor LC1 D / LP1 D
• Part Number: 03777840161

Application

This relay is ideal for protecting AC motors in various industrial applications, including conveyors, pumps, fans, and material handling systems where reliable overload and phase-loss protection is critical.

Country of Origin

Made in France.

CO2 Impact

By purchasing this pre-owned component, you are avoiding the emission of approximately 10 kg of CO2 associated with the production of a new one.

Availability

This item is in stock and ready for immediate dispatch. Order now from PLC2Day for expert support and fast delivery.

FAQ

Question?

What is the trip class of the LR2 D3355 and what does it mean?

The LR2 D3355 has a Trip Class of 10A. This means it will trip within 10 seconds when the motor is subjected to a locked rotor condition (typically 6 times the full load current), providing standard protection for most motor applications.

Can I mount this relay separately, or does it have to be attached to a contactor?

This relay is designed for direct mounting onto Telemecanique (Schneider Electric) LC1D series contactors (e.g., LC1D40 to LC1D80). For separate mounting, you would need a specific terminal block adapter, such as the LA7D3064.

How do I reset the LR2 D3355 after a trip?

After a trip, allow the relay to cool down. You can then choose between manual or automatic reset. For manual reset, press the blue 'Reset' button. An automatic reset mode is also available, which can be selected on the device, where it will reset itself once cooled.

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Last Update: Friday, March 13, 2026