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Siemens Energy & Automation, Inc.
Bellefontaine, Ohio 43311 U.S.A.
Installation Instructions
Hazardous Voltage.
Will cause death or severe
injury.
Turn off and lock out all power supplying this
device before removing cover(s) or device
and while cover(s) are removed.
Wire connector shield no. NDTS must be
installed when wire connectors TA2K8750,
TA3P8750, TA4P8500, TA2N8750, TA3N8750,
OR TA4N8500 ARE USED.
Replace all covers and shields before power
supplying this device is turned on.
SAFETY INSTRUCTIONS
NOTE: This instruction outlines the recommended
installation procedure.
Introduction
The MD and ND Frame circuit breaker line includes
The MD and ND Frame circuit breaker line includes
SMD6, SHMD6, SCMD6, SND6, SHND6 and
SMD6, SHMD6, SCMD6(-A), SND6, SHND6 and
SCND6 circuit breaker types. These devices are
SCND6(-A) circuit breaker types. These devices are
rated for operating voltages up to 600 VAC, 50/60 Hz.
rated for operating voltages up to 600 VAC, 50/60 Hz.
Installation
The MD and ND Frame circuit breaker devices are
for use in individual enclosures, panelboards or
other approved equipment.
The installation procedure consists of inspecting,
attaching required accessories, mounting the de-
vice and connecting and torquing the line and load
wire connectors.
Mounted hardware and unmounted wire connec-
tors (where required) are available as separate cata-
log items.
Circuit Breaker Preparation
A. Before installing or servicing the breaker, turn
off and lock out all power to prevent incidental or
accidental contact.
B. Make sure that the device is suitable for the in-
stallation by comparing nameplate ratings with
system requirements. Inspect the device for com-
pleteness and check for any damage before
mounting.
Solid State Molded Case Circuit
Item:
Breaker Sentron Series Sensitrip III
I-T-E ® MD Frame Types SMD6,
I-T-E
Devices:
SHMD6, and SCMD6. ND Frame Types
SHMD6, and SCMD6(-A). ND Frame
SND6, SHND6, and SCND6.
Types SND6, SHND6, and SCND6(-A).
1 of 6
Page
NOTE: Accessory installation should be complete
before the circuit breaker is mounted and
connected. (See installation instructions
supplied with the Accessory before pro-
ceeding.)
C. Depress the red trip button (See Fig. 4) or turn
the breaker off before installation.
D. To mount the device, perform the following steps:
1. For enclosures, panelboards and switch
boards manufactured by Siemens Energy &
Automation, Inc., follow instructions provided
with the equipment.
Released Production, C v1, Apr 18, 2011
Released Production, B v1, Dec 18, 1998
®
MD Frame Types SMD6,
Fig. 1
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Summary of Contents for Siemens SMD6
- Page 1 Solid State Molded Case Circuit Item: Breaker Sentron Series Sensitrip III I-T-E ® MD Frame Types SMD6, ® I-T-E MD Frame Types SMD6, Devices: SHMD6, and SCMD6. ND Frame Types SHMD6, and SCMD6(-A). ND Frame SND6, SHND6, and SCND6. Types SND6, SHND6, and SCND6(-A).
-
Page 2: Manual Operation
Siemens Energy & Automation, Inc. Bellefontaine, Ohio 43311 U.S.A. Hazardous Voltage. Will cause death or severe injury. Turn off and lock out all power supplying this device before removing cover(s) or device and while cover(s) are removed. Wire connector shield no. NDTS must be... -
Page 3: Maintenance
Sensitrip III Solid tailed information, consult applicable NEMA publica- State Molded Case circuit breakers may be tested tions or your local Siemens sales office. for electronic functionality by the use of TS-31 test set available from local Siemens sales offices. -
Page 4: Electronic Operation
Siemens Energy & Automation, Inc. Bellefontaine, Ohio 43311 U.S.A. Hazardous Voltage. Will cause death or severe injury. Turn off and lock out all power supplying this device before removing cover(s) or device and while cover(s) are removed. Wire connector shield no. NDTS must be... - Page 5 Siemens Energy & Automation, Inc. Bellefontaine, Ohio 43311 U.S.A. Hazardous Voltage. Will cause death or severe injury. Turn off and lock out all power supplying this device before removing cover(s) or device and while cover(s) are removed. Wire connector shield no. NDTS must be...
- Page 6 Page Replace all covers and shields before power supplying this device is turned on. 720658A03 Pc. No. © Siemens Energy & Automation, Inc. 1990 Installation Instructions Neutral Sensing Transformer. Electronic Testing An external transformer is required for circuit break- Senstrip III solid state molded case circuit break-...