Multilin PROTECT 4A-120 User Manual

Multilin PROTECT 4A-120

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MOTOR PROTECTION RELAY

INSTRUCTION MANUAL

Table of Contents

Questions and Answers:

I
Isaac ParkerAug 5, 2025
Why do I get ground fault nuisance trips with Multilin Relays?
- E
  Elizabeth LambAug 5, 2025
  Ground fault nuisance trips in Multilin Relays can occur due to capacitive motor inrush currents providing a ground fault signal. To resolve this, increase the ground fault level and time settings. Additionally, if the CT wiring is too close to a high noise source, twist the CT wires together and route them away from high current cables, or use shielded cable.
S
Spencer RodriguezAug 15, 2025
Why are Multilin Relays experiencing periodic overload tripping?
- E
  ewilliamsonAug 15, 2025
  Periodic overload tripping in Multilin Relays can be caused by overload surges during running. In this case, defeat any mechanical jams. Also, it may be caused by an incorrect run curve. To solve the problem, use a run curve with a longer trip time, meaning a higher stall setting.

Multilin PROTECT 4A-120 Specifications

General

Brand	Multilin
Model	PROTECT 4A-120
Category	Relays
Language	English

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