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Internal Accessories
Preparation For Installation of Electric Motor Op erator
Spring
CAUTION: Siemens advises that all internal accesso
ries should be added with the breaker removed from
service and properly secured to a work surface. Do
not attempt to install accessories with the breaker in
a "Closed" or "Charged" position. Personal injury
or mechanical damage may occur.
Accessories
The full family of accessories available for Siemens SB
breakers are presented in this section. The accessories
are divided into two groups: accessories that are installed
in the front compartment of the circuit breaker ( Internal
Electric Operator Troubleshooting Guide
Symptom
Motor does not run
Motor runs for 20 seconds does not
charge springs. lamp on L T 4 blinks
slowly (one seconds on. two seconds off).
Breaker will not close electrically.
Lamp on LT4 blinks slowly (one second
on, two seconds off).
Motor Operator Current Draw
Supply Voltage
1 20V AC
24V DC
48V DC
1 25V DC
Use 1 %A Slo-Bio Fuse.
Solutions
1
Check for spnngs already charged by checking spring charge indicator.
2.
Check for rated voltage at L T1 and L T5.
3. Check motor fuse - requires 1 .8A Slo-Bio fuse.
4. Check all wiring connections.
If
5.
the lamp connected to LT4 is blinking slowly (one second on, two seconds off) remove power from
L T1 and L T5 then re-apply power.
1
Remove power from L T1 and L T5, manually charge breaker. Reapply power to LT1 and L T5 motor should run
fo r less than 10 seconds and shut off Lamp on L T 4 should remain on.
Check to see if springs are charged by checking charged indicator flag.
1
2. Check for power on L T 1 and L T5.
Check for power on L T2. If power is on L T2, remove and reapply.
3.
4. Check to see if breaker is locked in open position by either padlocking device, kirk key, or drawout interlock.
5 .
Check to see if breaker handle is fully seated in cover.
6.
Check all wiring connections.
1
Remove power from L T1 and L T5. Manually charge breaker springs. Reapply power to L T1 and L T5.
Lamp on LT4 should remain on.
Motor Rating (Amperes)
3
3
3
3
Accessories) and accessories that are installed or used
outside of the front compartment (External Accessories).
The External Accessories are installed on the exterior of the
circuit breaker, on the drawout elements, or at remote
locations. When the installation location is referred to as
the "right side" or "left side, " it i s with reference to the
user's right or left side when facing the front of the breaker.
Components required to access or activate an accessory
such as a switch or indicator at a remote location are
assumed to be user supplied unless otherwise stated .
Group One - Internal Accessories
Secondary connections to remote locations are made to
"secondary disconnects" on drawout breakers and to
"control terminal blocks" on fixed-mounted breakers. The
terminal points for all internal accessories are defined in the
External Accessories section, pages 65-66. Control power
connections for accessories are made through terminal
blocks mounted on the sides of the breaker (see page 65).
Drawout constructed breaker control power connections
are made through secondary d isconnects mounted on the
stationary and moving elements.
Remote Close Coil (When Used)
Supply Voltage
1 20V AC
24V DC
48V DC
1 25V DC
In Rush Current (Amperes)
9.4
20.0
1 0 .
3
3.6
37
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