Minilec S1 VMR7 Phase Sequence Relay | 3 Phase Protection Relay | 380-440VAC

Product Description

The Minilec S1 VMR7 Phase Sequence Relay is a compact three-phase monitoring relay designed to protect motors and industrial equipment from incorrect phase sequence conditions. Operating on a 380-440VAC, 3-phase, 3-wire supply, the relay continuously monitors phase rotation and prevents equipment operation when the phase sequence is incorrect, helping avoid costly motor damage and downtime. The relay features instant fault detection, auto-reset functionality, and a 1 Changeover (CO) output relay, making it ideal for industrial control and motor protection applications.

What is it?

The Minilec S1 VMR7 is a phase sequence relay that monitors the incoming three-phase power supply and detects phase reversal conditions. If the phase sequence is incorrect, the relay prevents the connected equipment from operating, protecting motors and rotating machinery from reverse rotation and mechanical damage.

Where is it used?

• Agricultural pump starter panels

• Hoist and crane motor control systems

• Injection moulding machines

• Machine tools and CNC equipment

• Valve actuator motor control panels

• Three-phase HVAC and split AC systems

• Industrial motor control centers (MCC Panels)

• Conveyor and material handling equipment

Key Features

• Monitors and detects incorrect phase sequence in 3-phase systems

• Wide operating voltage range of 380-440VAC, 3 Phase, 3 Wire

• Instant trip action for fast equipment protection

• Auto-reset operation for automatic restoration after fault correction

• 1 Changeover (CO) relay output for easy panel integration

• Compact 18mm DIN rail mounting design saves panel space

• Built-in auxiliary supply derived from the three-phase system

• LED indication for power and relay status monitoring

Benefits of Using Minilec S1 VMR7

• Prevents reverse rotation of motors caused by phase reversal

• Protects pumps, compressors, and machinery from damage

• Reduces maintenance costs and unexpected downtime

• Improves reliability of three-phase electrical installations

• Ensures safe operation of critical industrial equipment

Why Buy from Voltkart?

• Authorized supplier of genuine Minilec products

• GST invoice provided with every order

• Fast Pan India delivery

• Competitive pricing for industries, OEMs, contractors, and panel builders

• Technical support for product selection and application assistance

• Secure online ordering and trusted customer service

• Ready stock availability for faster dispatch

Order the Minilec S1 VMR7 Phase Sequence Relay online from Voltkart for reliable protection of motors, pumps, HVAC equipment, and industrial machinery against phase reversal faults.

Also explore our full range of Phase Monitoring Relays, Protection Relays, and Electrical Safety Devices

Specification