Eaton SBN-508 User Manual

29
Instructional Leaet IB2C12063H03
Effective March 2012
Instructions for Installation, Operation and
Maintenance of Magnum SB Insulated Case
Low Voltage Power Circuit Breakers
EATON CORPORATION www.eaton.com
Drawout type circuit breakers: Compatible secondary plug-
in connectors are mounted on the top front portion of the
drawout cassette (Figure 40). These connectors match and plug
into the circuit breaker mounted connectors. Contact points
are wired from the cassette’s plug-in connectors to cassette
mounted terminal blocks. The terminal blocks are also mounted
on the top front portion of the cassette. The secondary
terminals have finger-proof hinged covers with small holes for
probe testing.
Fixed type circuit breakers: There are two secondary
connection options:
(1) Without Terminal Block
(2) With Terminal Block
1 Without Terminal Block - If a terminal block for customer
use is not required, the circuit breaker is supplied with
both plug-in connectors (male and female) just described
in the two previous paragraphs. The plug-in connectors are
joined and attached to the top portion of the circuit breaker.
The customer can plug secondary wiring with crimpon
connectors into back of the plug-in connectors; subsequently
the connections to the circuit breaker can be quickly joined or
separated as required.
2 With Terminal Block - For those customers preferring to
wire to a terminal block, terminal blocks with finger-proof
hinged covers are added to the secondary configuration
just described for a fixed circuit breaker “without a
terminal block.” The terminal blocks are wired to the plug-in
connectors and also permanently attached to the upper rear
portion of the circuit breaker (Figures 18 and 19).
A standard tool is available from the plug-in connector
manufacturer (AMP) to facilitate the removal of secondary
wiring from a plug-in connector, or contact Cutler-Hammer
for assistance (Figure 41). The connector halves must be
separated to use this tool.
Connection Diagrams
The connection diagrams for all Magnum SB circuit breakers
using Digitrip RMS trip units are shown in Figures 42 through
59.
Closed Hinged Covers
with Testing Holes
Terminal Blocks
Figure 40. Typical Cassette Mounted Secondary Wiring
Figure 41. AMP Secondary Wiring Removal Tool

Eaton SBN-508 Specifications

General

Brand	Eaton
Model	SBN-508
Category	Circuit breakers
Language	English