Factory Manufacturing Motor Circuit Protector and AC Underload Motor Protection Relay

• Theory: Electromagnetic Relay
• Usage: Motor Protect
• Phase: 3
• Electricity Type: Ac
• Number of Pole: 2
• Load: Medium Power Relay
• Model NO.: MDB-301Z
• Protective Characteristics: Enclosed Rlay
• Action Principle: Electromagnetic Type
• Size: Miniature
• Type: Electric Parameter Relay
• Protect Feature: IP40
• Contact Load: Low Power
• Transport Package: Carton
• Specification: 10*10cm
• Trademark: BJ
• Origin: Zhejiang, China
• Production Capacity: 1000 Piece/Pieces Per Month

Product Description

Product Description

Motor Protection Relay is a relay used for motor protection. It can monitor the status of the motor, such as current, voltage,temperature, etc., and automatically cut off the power to protect the motor from damage when a fault occurs or the set limit is exceeded.

 

Features

 

 

Features

 

* With overcurrent, phase failure, overload underload protection.
* Rail mounted method for easy installation.
* Multiple reset methods for various needs.
* Digital intelligent motor protector, digital display, more convenient to observe motor status.
* Can better the of equipment.

 

 

 

Specification

Model	MDB-301Z	MDB-301F
Structure	Integrative	Separate
Mounting	Panel mounting & Din rail	Flush mounting
Power supply	AC220V,AC380V,50/60Hz
Current range	0.3-16A,3-160A,100-999A ***For 10-999A type,the relay should couple with external CT and set the CT ratio***
Measurement error	1%
Overcurrent delay	definite time:0.5-60s; inverse time:1-5 trip class
Undercurrent threshold	Same as overcurrent,delay 0.5-60s
Start-up delay	0-200s
Locked-rotor threshold	1.5-8 time of overcurrent,delay 3s
Short circuit threshold	3-22 time of overcurrent,delay≤50ms
Current unbalance threshold	10-50%,delay 5s
Phase loss delay	2s
Ground fault threshold	30mA-2.5A,delay 1s
Overvoltage threshold	65-690V,delay 5s
Undervoltage threshold	65-600V,delay 5s
Auto-reset time	0.1-30minutes
Auto-reset count	1-10
Reset mode	Manual / Auto /power cycle
Output contacts	1NO+1NC
Contact capacity	5A/AC220V,3A/AC380V(Resistive)
Dimensions (L x W x D)	90×70×106.5mm	91 x 47 mm(cut-out hole size)

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