Siemens SHKF3B100 100A 3-Pole 600 V Circuit Breaker

Meet the Siemens SHKF3B100: a robust protection solution built for three‑phase power, delivering trusted protection with a 100 A current rating in a 3‑pole, 600 V package. With the part number SHKF3B100, this Siemens circuit breaker is designed to safeguard commercial and light‑industrial electrical distributions where reliable, coordinated interruption is essential.

Key specifications at a glance

• Current rating: 100 A
• Poles: 3 (three‑pole) for full three‑phase coverage
• Voltage rating: 600 V
• Part number: SHKF3B100

Why the SHKF3B100 stands out

This Siemens breaker is purpose‑built to provide reliable overload and short‑circuit protection across all three hot legs. The 3‑pole design ensures synchronized disconnection, which is crucial for balanced three‑phase loads such as motors, pumps, and conveyors. By isolating all phases together, it minimizes unbalanced conditions and protects downstream equipment from damage and nuisance outages.

Ideal use cases

• Three‑phase motor protection in commercial facilities and light‑industrial plants
• Protection for feeders and distribution circuits in panelboards and switchgear
• Safeguarding equipment racks and machinery that rely on stable three‑phase power

What problems it solves

• Prevents equipment damage from overloads by interrupting excessive current quickly
• Provides coordinated tripping across all three phases to avoid partial faults
• Reduces downtime and maintenance costs by protecting critical loads and circuits

How this compares to standard solutions

Compared to single‑pole protection, the SHKF3B100 delivers true three‑phase coverage, ensuring that all phases are simultaneously protected. This reduces the risk of unprotected legs causing damage or nuisance faults in motors and three‑phase equipment, and it simplifies maintenance with a single, coordinated protective device.

• Verify compatibility with your panel or enclosure’s mounting and conductor sizes before replacement or installation
• Ensure proper torque on terminals to maintain a secure, reliable connection
• During maintenance, inspect for signs of wear or corrosion on the trip mechanism and contacts