Control Relay - 3RR Series

SIRIUS 3RR21 and 3RR22 current control relays are suitable for controlling motor loads and other types of loads.

Features

• In 2 or 3 phases, they monitor the RMS value of AC currents for overcurrents or undercurrents relative to set threshold values.
• Can be mounted on the 3RT2 contactor.
• Suitable for contactor sizes S00 or S0.
• Analog and digital adjustable.

Applications

For controlling alarms and warnings in case of phase failure, overcurrent/undercurrent tripping, current lock warning, sequence-of-phase fault disconnection, and cable disconnection.

Technical Specifications

• Screw/spring clamp connection
• SPCO output contact

Siemens Sirius Contactor and Control Relay Range

Siemens controller for feeders up to 5.5 kW. The complementary nature of the devices allows for quick and easy mounting, for example, of starter motors and inverters. A perfect adaptation between contactors, overloads, magnetothermal circuit breakers and accessories for the same power values provides a uniform panel appearance and standard widths without reducing lateral mounting space to save space.