Schneider RM22TR33 3-Phase Control Relay Harmony 8A 2CO 380-480VAC

The Schneider Electric RM22TR33 is a three-phase voltage control relay in the Harmony Control Relays range, designed to monitor overvoltage, undervoltage, phase sequence, and phase loss on 380...480 V AC networks. It delivers 2 C/O output contacts rated at 8 A AC with an adjustable fault time delay of 0.1...30 s.

Technical specifications:

• Commercial reference: RM22TR33
• Manufacturer: Schneider Electric
• EAN:
• Series / range: Harmony Control Relays
• Product type: Three-phase voltage control relay
• Monitored parameters: Overvoltage, undervoltage, phase sequence, phase loss
• Measurement range: 380...480 V AC (phase-to-phase)
• Supply voltage limits: 304...576 V AC
• Supply frequency: 50...60 Hz +/- 10%
• Output contacts: 2 C/O, 8 A AC, 2000 VA switching capacity
• Fault time delay: Adjustable 0.1...30 s (+/- 10%)
• Response time: 300 ms maximum
• Mounting: 35 mm DIN rail per IEC 60715, width 22.5 mm
• Connection: Screw terminals, 0.5...2.5 mm² solid / 0.2...1.5 mm² flexible
• Weight: 0.09 kg
• IP rating: IP40 (housing), IP50 (front panel) per IEC 60529
• Operating temperature: -20...60 °C at 50 Hz; -20...50 °C at 60 Hz
• Certifications: CE, UL, CSA, CCC, RCM, EAC, GL

Features and benefits:

• Monitors overvoltage, undervoltage, phase loss, and phase sequence detection in a single compact unit
• True RMS measurement with 150 ms maximum measurement cycle and 300 ms response time
• Adjustable 0.1...30 s fault time delay to reduce nuisance tripping in demanding environments
• Cadmium-free contacts with 100,000 electrical cycles and 10,000,000 mechanical cycles durability
• Integrated test button and dual LED indicators: yellow (relay ON), green (device powered)

Applications:

• Three-phase motor protection against phase loss and incorrect phase sequence
• Voltage monitoring in motor control centers and industrial automation panels
• HVAC, pump, and compressor systems requiring three-phase supply quality supervision

Compliant with IEC 60255-1, IEC 60947-5-1, IEC 60947-4-1, and IEC 60664-1. Part of the Schneider Electric Harmony Control Relays range.

Also known as: Schneider RM22TR33, Schneider Electric RM22TR33, three-phase voltage monitoring relay, phase failure relay.