MB30-CS datasheet(3/105 Pages) MITSUBISHI

3 / 105 page

1. INTRODUCTION

Mitsubishi Advancing Technology

Mitsubishi, the leading manufacturer of circuit break-

ers, has been providing customers with a wide range

of highly reliable and safe moulded case circuit break-

ers (MCCB) and earth-leakage circuit breakers

(ELCB), corresponding to the needs of the age.

Since production began in 1933 many millions of

Mitsubishi ACBs, MCCBs and MCBs have been sold

throughout many countries.

In 1985 a new design concept for controlling arc en-

ergies within MCCBs – vapour jet control (VJC) – was

introduced and significantly improved performance. It

is provided the technological advance for a new ‘su-

per series’ range of MCCBs and is used in all present

ratings from 3 to 1600 amps.

In 1995 Mitsubishi offers the new PSS (Progressive

Super Series) breakers having ratings from 3 to 250

amps that concentrate the most advanced technolo-

gies into a compact body. Their four major features

are:

• New circuit-breaking technology

ISTAC for a higher

current-limiting performance, upgrading the circuit-

breaking capability.

• Electronic circuit breakers with the Digital ETR pro-

tecting the circuit accurately.

• One-frame, one-size design allowing efficient panel

design.

• Cassette-type internal accessories that allow instal-

lation by the user.

Progressive Super Series, an integration of technol-

ogy and know-how from this comprehensive electronic

product manufacturer, will create its own fields of ap-

plication with its excellent performance.

A Brief Chronology

1933

Moulded case circuit breaker production

begins.

1952

Miniature circuit breaker production be-

gins.

1968

Manufacture commences of short-time-

delayed breakers.

1969

Production and sale of first residual cur-

rent circuit breakers.

1970

170kA breaking level ‘permanent power

fuse’ integrated MCCBs is introduced.

1973

Introduction of first short-time delay and

current-limiting selectable breakers go on

sale.

1974

First MELNIC solid-state electronic trip

unit MCCBs are introduced.

1975

ELCBs with solid-state integrated circuit

sensing devices are introduced.

1977-1979 Four new ranges of MCCBs are intro-

duced – economy, standard, current lim-

iting, ultra current limiting and motor rated

designs – a comprehensive coverage of

most application requirements.

1982

Compact ACBs with solid-state trip de-

vices and internally mounted accessories

introduced.

1985-1989 Super series MCCBs with VJC and ETR

are developed and launched – awarded

the prestigious Japanese MInister of Con-

struction Prize.

1990

New 200kA level U-series MCCBs super

current limiting breakers are introduced.

1991

Super-NV ELCBs and Super-AE ACBs

are introduced.

1995

Progressive Super Series 30~250 amps

are introduced.

1997

Progressive Super Series 400~800 amps

are introduced.

MB30-CS Datasheet(PDF) 3 Page - Mitsubishi Electric Semiconductor

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