Description
The Siemens NGB3B070 is a 3-pole molded case circuit breaker designed for reliable circuit protection in three-phase systems. Rated at 70 amps and 480 volts, this breaker provides dependable overcurrent and short-circuit protection in industrial and commercial panelboard applications. Built with thermal magnetic trip technology, the NGB3B070 ensures consistent performance and safe power distribution.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Siemens |
| Category |
Circuit Protection |
| Part Number |
NGB3B070 |
| Subcategory |
Molded Case Circuit Breaker |
| Series |
VL Series |
| Frame Type |
GB |
| Type |
NGB |
| Poles |
3 |
| Amperage |
70A |
| Voltage Rating |
480V |
| Phase |
3 |
| Interrupting Rating (AIC) |
25kA @ 480V |
| Trip Type |
Thermal Magnetic |
| Trip Functions |
Long-Time and Instantaneous |
| Mounting Type |
Panel Mounted / Bolt-On |
| Terminal Connection |
Load Side Lug |
| Connection Type |
Bolt-On |
| Certifications |
UL Listed, CSA Certified |
| Standards Compliance |
NGB Series, HACR Rated |
| Dimensions (HxWxD) |
3" x 5.54" x 2.8" |
| Weight |
0.85 lbs |
Information About NGB3B070
The NGB3B070 is part of Siemens’ VL Series of molded case circuit breakers, offering compact, high-performance protection solutions for demanding electrical environments. This unit features a GB frame design and utilizes long-time and instantaneous trip functions for precise overload and fault interruption. With an interrupting capacity of 25kA at 480V, it is ideal for use in heavy-duty power panels and equipment distribution. Its bolt-on mounting and load-side lug terminals provide secure installation and simplified service in industrial switchgear systems.
Key Features:
- Thermal Magnetic Trip Unit: Combines long-time and instantaneous trip functions for accurate overload and short-circuit protection.
- High Interrupting Capacity: Rated 25kA at 480V for robust fault-handling performance.
- 3-Pole Design: Supports three-phase electrical systems for balanced load management.
- Bolt-On Connection: Ensures firm mechanical mounting and reliable current transfer.
- Compact Frame: Space-saving GB frame fits efficiently in modern panelboards.
- UL and CSA Certified: Complies with recognized safety and performance standards.
- Panel Mount Compatibility: Designed for use in Siemens VL Series panels and reverse-feed applications.
- Durable Construction: Engineered for consistent operation under industrial environmental conditions.
The NGB3B070 delivers the reliability and precision required for efficient power distribution and fault protection in commercial and industrial systems.
