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Siemens Energy & Automation, Inc.
Bellefontaine, Ohio 43311 U.S.A.
3 of 6
Page
Installation Instructions
Inspection and Field Test
MD and ND Frame devices are designed to provide
years of maintenance free service. Sensitrip III Solid
State Molded Case circuit breakers may be tested
for electronic functionality by the use of TS-31 test
set available from local Siemens sales offices.
Maintenance
Experience has shown that properly applied molded
case circuit breakers normally do not require main-
Handle
Push-To-
Trip Button
tenance. However, some industrial users may choose
to establish an inspection and maintenance proce-
dure to be carried out on a regular basis. For de-
tailed information, consult applicable NEMA publica-
tions or your local Siemens sales office.
NOTE: Do not spray or allow any petroleum based
chemicals, solvents or paints to contact the molded
parts or nameplates.
Fig. 4
Released Production, C v1, Apr 18, 2011
Released Production, B v1, Dec 18, 1998
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.
On
Trip
Off
Reset
Load
Cover
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