Siemens ND63F120

Product Introduction
Heavy-duty molded-case / panelboard-class circuit breaker for three-phase power distribution and overcurrent protection.
Technical Specifications
Brand: Siemens
Model: ND63F120
Category:
Description
Current Rating: 1200 A
Poles: 3
Type: Thermal-magnetic circuit breaker
Mounting: Bolt-on / panelboard style depending on assembly
Approvals: UL, CSA
Functional Features
Three-phase short-circuit protection.
Overload protection.
Retrofit-friendly part number.
Suitable for main feeder protection.
Compatible with Siemens distribution equipment.
Performance Parameters
Rated Current: 1200 A
Pole Configuration: 3-pole
Protection: Thermal overload and magnetic short-circuit
Application Class: Commercial / industrial power distribution
Application Scenarios
Panelboards.
Load centers.
Main feeders.
Critical branch circuits.
Commercial buildings.
Light-industrial facilities.
Structural Characteristics
Molded case construction.
Trip mechanism for overload and fault current.
Line and load terminal connections.
Designed for fixed distribution enclosure mounting.
Installation Requirements
Install in compatible Siemens panelboard or switchboard.
Verify frame size, mounting style, and bus compatibility.
Torque terminals to manufacturer specification.
Use qualified electrical personnel for installation.
Usage Notes
De-energize before installation or maintenance.
Do not exceed rated current and system voltage.
Inspect for damage before reuse.
Replace if tripped under severe fault conditions or mechanically damaged.
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