English
Français
Español
عربى
Message Feedback
RM22UB34 Single-Phase Voltage Monitoring Relay
Core Functions: Monitors the voltage of a single-phase 220V circuit; detects over-voltage, under-voltage, and power loss conditions; and independently monitors the power supply to a single-phase load.
Terminal Definitions
A1/A2: Connection points for the single-phase power supply to be monitored;
L1/L2: Power supply circuit;
Output contacts: Linked to alarm or shutdown functions.
Practical Applications
1. Monitors 220V equipment such as heating elements, single-phase variable frequency drives (VFDs), lighting systems, and small oil pumps;
2. Disconnects the load when grid voltage is excessively low or high, preventing damage to controllers and heating elements;
3. Can be used for delayed equipment startup upon power-up and for power-loss alarms.
Certificate Of Honor
Product Accessories
-
RM22TR33 Multifunction 3-Phase Voltage Monitoring Relay
-
RM22TG20 Simple Phase Sequence and Phase Loss Relay
-
RM22LG11MR Liquid Level Control Relay
-
Magnetic AC Contactor 25A 220V – DIN Rail Motor Control Switch
-
Magnetic AC Contactor 630A 220V – DIN Rail Motor Control Switch
-
EZC Molded Case Circuit Breaker 2P 100A–1600A for Low-Voltage Power Distribution
Message Feedback
Manufacturing Expert
Zhejiang Mingtuo Electrical Technology Co., Ltd.
Zhejiang Mingtuo Electrical Technology Co., Ltd. is a technology-driven enterprise specializing in the research, development, and manufacturing of low-voltage and medium-voltage circuit breakers. China Suppliers of RM22UB34 Single-Phase Voltage Monitoring Relay. Leveraging Liushi's comprehensive electrical industry chain and local advantages, we provide reliable and safe electrical protection products along with customized solutions for global industrial, commercial, and residential power distribution systems.
We are committed to becoming a trusted electrical protection partner for global customers through professional engineering capabilities, consistent manufacturing quality, and flexible customization services.
News
-
What Are Medium-Voltage Indoor Vacuum Circuit Breakers Medium-voltage indoor vacuum circuit breakers are switching devices used to interrupt electrical current in power distribution systems typically ...
READ MORE -
What Is an Air Circuit Breaker and How Does It Work? An air circuit breaker (ACB) is a switching and protection device used in low-voltage power distribution systems — typically for circuits operating...
READ MORE -
What Makes a Vacuum Circuit Breaker Different? A vacuum circuit breaker (VCB) interrupts fault current by separating its contacts inside a sealed vacuum interrupter, where the absence of gas molecules...
READ MORE -
What a Molded Case Circuit Breaker Does and How It Works A molded case circuit breaker, commonly abbreviated as MCCB, is an electromechanical protective device housed in an insulated molded plastic ca...
READ MORE
Zhejiang Mingtuo Electrical Technology Co., Ltd. All Rights Reserved.
Wholesale RM22UB34 Single-Phase Voltage Monitoring Relay Company
