Part of the Siemens SENTRON family, the NGG2B070L provides robust thermal-magnetic protection for commercial applications. This 2-pole, 70A molded case circuit breaker is rated for 25 kAIC at 480VAC, ensuring reliable performance. It features a versatile unit mount design that secures easily to DIN rails or standard control panels. Equipped with factory-installed lugs, this breaker is reverse feed capable and HACR rated. This legacy NGG frame model is replaced by the 3VA5170-4ED21-0AA0.
Siemens Enclosures, Control Panels, Switchboards, DIN Rail
Wire Gauge
8-1/0 AWG (Cu), 8-2/0 AWG (Al)
Max Wire
1/0 AWG (Cu), 2/0 AWG (Al)
Min Wire
8 AWG
Protection and operation
Trip Technology
Thermal Magnetic
Trip Function Code
LI
Trip Function
Long-Time, Instantaneous
Trip Adjustability
Fixed Thermal, Fixed Magnetic
Standards and features
Available Options
Shunt Trip, Auxiliary Switch, Alarm Switch
Accessories
Line and Load Lugs Included (TC1GG20)
Standards
CSA C22.2 No. 5, IEC 60947-2, UL 489
Approval
CE, CSA, HACR, NOM, UL
Temp Rating
40C
Product FAQs
5 answers
What wire sizes are compatible with the lugs on the NGG2B070L?
The factory-installed lugs accept 8 AWG to 1/0 AWG copper wire, or 8 AWG to 2/0 AWG aluminum wire.
How is the NGG2B070L breaker mounted in a panel or enclosure?
This is a unit-mount breaker that can be secured using standard mounting screws or snapped onto a standard DIN rail. It is commonly used in control panels, switchboards, and standalone Siemens enclosures.
Are the trip settings on this breaker adjustable?
No, the NGG2B070L features a thermal-magnetic trip unit with fixed long-time and fixed instantaneous trip functions.
Is the NGG2B070L rated for direct current (DC) systems?
Yes, this breaker is rated for DC applications, providing an interrupting capacity of 14kA at 125/250VDC.
What frame class does this breaker belong to?
It is part of the Siemens SENTRON series and falls under the NGG frame designation, which is part of the broader GB/GG frame group.
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