Universal Remote Control MX-880Z - SPECS SHEET Technické informace stáhnout pdf (Strana 155)

™

Masterpact™ NT and NW Universal Power Circuit Breakers

Selection

155

05/2014

Introduction

Masterpact™ circuit breakers are available in three frame sizes:

•

T-frame circuit breakers: rated up to 800 A (ANSI Certified), up to 1600 A (UL

Listed), and up to

1600 A (IEC Rated).

•

W-frame circuit breakers: rated up to 4000 A (ANSI Certified), up to 3000 A (UL Listed), and up to

4000 A (IEC Rated).

•

Y-frame circuit breakers: rated up to 5000 A (ANSI Certified), up to 6000 A (UL Listed), and up to

6300 A (IEC Rated).

Within each range, several sensor plugs are available to determine the maximum trip rating of each

circuit breaker. In addition to a sensor plug, an adjustable rating plug is available to get lower ampacity

than that available with the sensor plug.

Masterpact circuit breakers can be equipped with a variety of Micrologic™ electronic trip unit

configurations, ranging from basic circuit protection to more advanced relay protection and power

metering capabilities. Additionally all electronic trip units within the new Micrologic family are field

interchangeable and upgradeable. Each control unit is also equipped with an interchangeable and

upgradeable adjustable rating plug which is used to select the long-time pickup setting of the circuit

breaker.

NOTE: Masterpact circuit breakers are ordered by sensor plug rating, not ampere trip rating. The trip

rating of the circuit breaker is determined by the setting of the adjustable rating plug. Sensor plugs and

rating plugs are field replaceable.

Overview of Selection Procedure

1. Select the completely assembled circuit breaker (circuit breaker frame plus trip unit):

— The frame ampere rating required

— The interrupting rating required

— The sensor plug rating required

— The connections

2. Select the trip unit, rating plug, and trip unit options.

3. Select circuit breaker frame options, if required.

4. Select cradle options, if required.

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Universal Remote Control MX-880Z - SPECS SHEET Technické informace Strana 155