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Cutler-Hammer 520

Trip Unit; for use only in Magnum and Magnum DS Circuit Breakers

Model

520

Product Family

Electrical & Power Quality

Manufacturer

Cutler-Hammer

Configured models contain the following attributes:

Electrical & Power QualitySwitchgear / Relay Testing

Configurations

Key Specs

Product Overview

Resources

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Product Overview

Digitrip trip units are breaker subsystems that provide the protective functions of a circuit breaker. The trip units are in removable housings, installed in the breaker, and can be replaced or upgraded in the field by the customer.

The Magnum Digitrip line of trip units consists of the 520, 520M, and 520MC for ULT standards and models 520i, 520Mi, and 520MCi for IEC standards.

The Digitrip 520, 520M, and 520MC trip units may be applied on both 50 and 60 Hz systems.

Specifications
Protection Types Available for Digitrip Trip Units
Digitrip Trip Unit Type	520/520i	520M/520Mi	520MC/520MCi
Ampere range	200–6300A	200–6300A	200–6300A
rms sensing	Yes	Yes	Yes
Communications	No	No	Yes ³

Note: ³ Limited to 1200A; this is only for UL versions, not for IEC models that have “W” in catalog number

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