Siemens General Application Molded Case Circuit Breakers
Introduction
Siemens General Application Circuit Breakers are industrial design thermal-magnetic breakers with valuable features for the global market, such as
A design that meets multi-national standards
Global ratings (UL489 / CSA-C22.2 No. 5-02 / IEC 60947-2 / NMX-J-266-ANCE-2002)
Field installable internal and external accessories
Siemens EG 15A to 125A Frame Circuit Breakers
Main Features:
Global ratings (UL / CSA / IEC / NOM)
HACR, SWD and HID marked (at applicable ratings)
UL listed field installable accessories
Removable lugs or ring terminal connectors allow last minute changes on site
35kA or 65kA @ 480VAC
Compact size (3.0" W x 5.5" H x 3.0" D (1.0" wide per pole))
1, 2, 3, 4 pole units
Overcenter toggle and trip free mechanism
Suitable for reverse feed applications
Common trip
Voltage ratings of 120V, 240V, 277V, 480V, 600Y/347V AC
DC rated up to 250V DC
Siemens EG Frame Circuit Breakers are well suited for OEM designed equipment in both light commercial and industrial applications. They may be used as incoming main and branch breakers in power distribution systems.
The EG family includes thermal-magnetic breakers, molded case switches, and motor circuit protectors which all can be independetly mounted on DIN rail with an adapter base or held in place by mounting screws.
Internal Accessories |
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This list shows a selection of optional internal accessories. For a complete list of the accessories, configurations, and ratings available in the EG family of molded case circuit breakers refer to the EG Circuit Breaker Product Guide or consult your local Siemens Energy & Automation Sales Office.
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 | Shunt Trip |
 | Undervoltage Release |
 | Auxiliary Switch
- Single / double switch
- Combination with alarm switch available |
 | Alarm Switch
- Single / double switch
- Combination with auxiliary switch available |
External Accessories |
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This list shows a selection of optional external accessories. For a complete list of the accessories, configurations, and ratings available in the EG family of molded case circuit breakers refer to the EG Circuit Breaker Product Guide or consult your local Siemens Energy & Automation Sales Office.
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 | Terminal Connectors
- Steel
- Aluminum |
 | Power Distribution Connectors (Aluminum) |
 | Interphase Barriers |
 | Handle Padlocking Device
- 3 pole only
- Allows padlocking the handle in the OFF or ON postition |
 | DIN Rail Adapter
- 3 or 4 pole |
 | Plug-In Assembly Kit
- Plug-In base
- Shields
- Connectors
- Auto-trip interlock
- 3- or 4-pole |
 | Rotary Handle Operator
- Mounted directly on the breaker
- Black / red handle |
 | Variable Depth Rotary Operator Kit
- 6 / 12 / 24 in. shafts
- Black / red handle |
 | Flex Operator Kit
- Flange mounted
- Variable depth
- Various cable lengths available (24-120 in.) |
Siemens NGG 15A to 125A Frame Circuit Breakers
Main Features:
Global ratings (UL / CSA / IEC / NOM)
HACR, SWD, and HID marked (at applicable ratings)
Integral DIN rail or base mount without adapters
UL listed field installable accessories
Interchangeable lugs and nut keepers allow last minute changes on site
25kA @ 480VAC
Compact Size (3.0" W x 5.4" H x 2.8" D (1.0" wide per pole))
1, 2, 3 Pole Units
Overcenter toggle and trip free mechanism
Suitable for reverse feed applications
Common trip
Voltage ratings of 120V, 127V, 240V, 277V, 480V, 600Y/347V AC
DC rated at 125V, 250V DC
Meets or exceeds Federal Specifications W-C375c
Classes 10b, 11a, 11b, 12b, 12c, 13a, 13b, 15b
Siemens NGG Frame Circuit Breakers are well suited for OEM designed equipment in both light commercial and industrial applications. They may be used as incoming main and branch breakers in power distribution systems and can be independently mounted on DIN rail or held in place by mounting screws.
The NGG Circuit Breaker has an overcenter toggle mechanism that is trip free and uses repulsion contact arm construction. Therefore, should a short circuit or tripping condition occur, the contacts are forced apart and the breaker cannot be held closed by means of the handle.
Internal Accessories |
|---|
This list shows a selection of optional internal accessories. For a complete list of the accessories, configurations, and ratings available in the NGG family of molded case circuit breakers refer to the NGG Circuit Breaker Product Guide or consult your local Siemens Energy & Automation Sales Office. |
Internal accessories for NGG Circuit Breakers are operational devices that are contained within an add-on module. Available devices are:
- Shunt Trip
- Auxiliary Switches
- Alarm Switches
One module can be attached to the left side only of an NGG type circuit breaker and can contain a single device or a combination with maximum two devices. Each module can be installed in the field. |
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External Accessories |
|---|
This list shows a selection of optional external accessories. For a complete list of the accessories, configurations, and ratings available in the EG family of molded case circuit breakers refer to the EG Circuit Breaker Product Guide or consult your local Siemens Energy & Automation Sales Office.
|
 | Face Mounting Plate |
 | Terminal Shield (3-pole) |
 | Handle Blocking Device |
 | Handle Padlock Device |
 | Operator Handle - Standard Depth - Red and yellow handle available |
 | Operator Handle Kit - Variable Depth - Red and yellow handle available |