Siemens EB3100S 100A 3-Pole 240 V Circuit Breaker

Siemens EB3100S 100A 3-Pole 240 V Circuit Breaker is a dependable overcurrent protection device built for 3-phase electrical systems. With a 100 A current rating across three poles and a 240 V nominal rating, this breaker helps you confidently safeguard feeders and equipment in commercial and light industrial environments.

Why this 3-pole design matters

In a 3-phase setup, all three live conductors share protection. The EB3100S disconnects all poles when a fault is detected, preventing partial protection that can leave equipment exposed and panels vulnerable. This makes it ideal for three-phase motors, pumps, HVAC compressors, and large lighting installations that run at 240 V.

• Three-pole configuration: protects all three phases simultaneously for complete circuit protection.
• 100 A rating: suitable for feed circuits and distribution to moderate-to-heavy loads without nuisance trips.
• 240 V nominal: designed for standard commercial/industrial 3-phase power systems.
• Reliable Siemens engineering: built for durable performance in demanding environments.
• Compatibility: intended for use in Siemens panelboards and compatible enclosure systems designed for EB-series devices.

Ideal use cases

The EB3100S excels in settings where robust 3-phase protection is critical. Use it to:

• Protect feeders that run 3-phase motors, conveyors, or pump systems from overloads and short circuits.
• Safeguard HVAC equipment, air handlers, and large lighting arrays powered from a 240 V 3-phase supply.
• Provide reliable branch protection in commercial electrical panels, data centers, workshops, and small to mid-size industrial spaces.

Practical considerations

To ensure optimal performance, verify that your panel or enclosure supports EB-series breakers and that the 100 A rating aligns with your load calculations. For retrofit projects, confirm the line-side and load-side terminations match the EB3100S specifications and observe safe installation practices per electrical codes.

Choose the Siemens EB3100S for proven 3-phase protection that keeps circuits safer and downtime lower, backed by Siemens' long-standing reputation for reliability in electrical distribution systems.