Siemens | HE3A045L | Circuit Breaker | 45A | 3-Pole | 480V | Bolt-On

Siemens HE3A045L is a 45A three-pole circuit breaker engineered for demanding industrial environments. The bolt-on design provides secure mounting in compatible switchgear and control panels, making it a dependable choice for maintenance, retrofit, or replacement projects in 3‑phase 480V systems. Rely on the part number HE3A045L as your best reference for compatibility and accurate ordering.

Key benefits you’ll feel in real-world applications:

• Three-pole (3‑phase) protection that safeguards motors, drives, and feeders in 480V distribution networks
• 45A current rating tailored for medium‑duty industrial loads and equipment protection
• Bolt-on mounting for a robust, vibration‑resistant connection in panelboards and switchgear
• Compact, dedicated design that fits standard Siemens-compatible installations without excessive panel modification
• Clear compatibility signal: rely on the HE3A045L part number when matching against existing equipment or replacement kits

Ideal use cases

• Retrofit projects in manufacturing lines where a precise 3‑pole, 480V breaker is required to protect motors, pumps, conveyors, and air handlers
• Replacement for aging or failed 3‑phase breakers in Siemens‑compatible panels, minimizing downtime and ensuring consistent protection
• New installations in control panels that demand a secure bolt-on solution for reliable operation in environments with vibration or thermal cycling

Practical considerations to maximize performance

• Before ordering, confirm fit and ratings against your panel schedule and equipment specs; the part number HE3A045L is your best compatibility reference
• Follow panel manufacturer torque and mounting guidelines to maintain the integrity of the bolt-on connection
• Use in conjunction with appropriate enclosure clearances and conductor sizing to ensure safe installation and serviceability
• Assess your 3‑phase load profile to ensure 45A protection aligns with motor start currents and startup requirements

Why this Siemens model stands out: it combines a precise 45A rating with a 3‑pole, 480V configuration in a bolt-on format, delivering dependable overcurrent protection with a straightforward retrofit path. If your electrical system operates on three-phase 480V and requires a durable, mechanically secure breaker, the HE3A045L offers a focused, build‑level solution designed for real-world industrial use.