SCHNEIDER ELECTRIC RM35UB330

Schneider Electric RM35UB330 Voltage Monitoring Relay

Description

The Schneider Electric RM35UB330 is a Zelio Control relay designed for precise monitoring of undervoltage conditions in 3-phase electrical systems. This robust device ensures the protection of motors, pumps, and other critical equipment by detecting voltage drops that could lead to damage or operational failure. It features adjustable settings for voltage thresholds and time delays, providing flexibility for various industrial applications. Its compact design allows for easy installation on a standard 35mm DIN rail.

Specifications

• Manufacturer: Schneider Electric
• Model: RM35UB330
• Product Line: Zelio Control
• Function: 3-Phase Undervoltage Monitoring
• Supply Voltage Range: 220-480V AC, 50/60 Hz
• Output Contacts: 2 C/O (Changeover)
• Switching Capacity: 5A / 250V AC
• AC-15 Rating: 3A / 250V AC
• DC-13 Rating: 2A / 24V DC
• Mounting Type: 35mm DIN Rail

Label Info

• Type: RM35UB330
• Input: 3x 220-480V AC, 50/60Hz
• Output: 5A/250V~

Application

Ideal for use in industrial control panels, motor control centers (MCCs), and any application requiring reliable protection against undervoltage conditions in a three-phase power supply. Common applications include HVAC systems, pumping stations, and manufacturing machinery.

Country of Origin

This product is made in Indonesia.

CO2 Impact

Opting for this pre-owned unit prevents the emission of approximately 4.8 kg of CO2 compared to manufacturing a new one. This saving is comparable to the carbon sequestered by a young tree over a year.

Availability

This unit is an obsolete model but is available from our stock. Order now from spareparts2day for expert support and fast delivery.

FAQ

What is the function of the Tt1 and Tt2 dials on the relay?

The Tt1 and Tt2 dials are used to set the time delays for the relay’s operation. This allows you to configure a delay before the relay trips on a fault condition or resets after the voltage returns to normal, preventing nuisance tripping from short voltage fluctuations.

Can this relay detect phase loss or incorrect phase sequence?

No, the RM35UB330 model is specifically designed for undervoltage detection (

What is the switching capacity of the output contacts?

The relay has two changeover contacts with a thermal current (Ith) of 5A. For inductive loads, the ratings are AC-15: 3A at 250V AC and DC-13: 2A at 24V DC.

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Last Update: Friday, March 13, 2026