Section 3: Equipment Description; Type Dsii Circuit Breaker - Eaton DSII Series Instructions For Installation, Operation And Maintenance

Instructional Book IB694C694-03

Section 3: Equipment Description

3-1 Type DSII Circuit Breaker

Type DSII Circuit Breakers are designed specifically for use
in metal enclosed low voltage switchgear assemblies (Figure
3-1).
The controls and indicators are functionally grouped on the
front of the circuit breaker. Easy access to the stored energy
mechanism and control devices is gained by removing the
circuit breaker faceplate. Inspection, minor maintenance, and
many replacement functions involving the mechanism, con-
trol, and/or accessory devices can be easily accomplished.
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1 Interphase Barrier
2 Arc Chutes
3 Secondary Disconnects
4 Main Disconnect
5 Levering Device Arm
6 Metal Faceplate
7 Trip Unit
8 Emergency Charge Handle
9 Trip Unit Sensors
Figure 3-1 Type DSII Circuit Breaker (Front and Rear Views)
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DSII Circuit Breakers are available with either a manually
operated or electrically operated two-step stored energy
mechanism. It provides positive control of the closing
instant.
Six continuous current frame sizes, 800 through 5000 amps,
are covered by just three physically different circuit breaker
sizes. A variety of optional accessories are available and
common to all circuit breaker frames.
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eaton corporation www.eaton.com
Effective July 2010
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