Siemens HE42B090 90A 2-Pole 480 V Circuit Breaker

Introducing the Siemens HE42B090 90A 2-Pole 480 V Circuit Breaker — a purpose-built overcurrent protection device engineered for demanding 480-volt electrical systems. With a 90 A rating and a two-pole design, this breaker delivers reliable, synchronized protection for dual-hot circuits in commercial and industrial environments.

• Current rating: 90 A
• Poles: 2 (two-pole configuration protects both hot conductors)
• Voltage rating: 480 V
• Part number: HE42B090
• Application: Protects feeders and branch circuits in 480V systems; suitable for use in compatible Siemens panels and installations requiring dependable two-pole protection
• Compatibility: Designed to integrate with Siemens panel architectures, making it a straightforward replacement part for existing HE42B090 installations

Ideal for environments with large motor loads, HVAC equipment, conveyors, and processing lines operating at 480 volts, the Siemens HE42B090 provides immediate disconnection of both live lines when electrical faults occur. This dual-pole shutdown helps minimize arc energy and protects downstream equipment, wiring, and personnel.

Why choose this Siemens circuit breaker? It’s built around Siemens’ engineered reliability for 480V distributions, offering consistent performance and a proven track record in industrial settings. Whether you’re upgrading an older panel, replacing a failed unit, or stocking spares for critical infrastructure, the HE42B090 is a precise, compatible choice for maintaining uninterrupted operation.

Installation and safety notes: verify that your panel is rated for 480V and that the Siemens HE42B090 is the correct replacement part for your exact panel model. Conduct all work in accordance with local electrical codes and specifications, and consult a licensed electrician if you’re unsure about compatibility or installation procedures.