Siemens ED41B090L - 90 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Siemens ED41B090L 90A 120V 1-Pole Bolt-On Circuit Breaker

The Siemens ED41B090L is a rugged, bolt-on molded‑case circuit breaker engineered to guard your electrical system against overloads and short circuits. With a robust 90A rating at 120V and a single-pole design, it delivers dependable branch circuit protection for panelboards and loadcenters in residential, commercial, and light industrial settings.

Why this breaker stands out

• Secure bolt-on mounting for a rigid, vibration‑resistant bus connection that stays put through a wide range of operating conditions.
• Thermal‑magnetic trip unit provides stable, repeatable protection by combining time‑delay thermal sensing with instantaneous magnetic tripping to quickly clear dangerous faults.
• OEM compatibility designed to pair with Siemens matching loadcenters and panelboards for straightforward replacement and aligned protection schemes.
• Built for durability molded‑case construction stands up to daily use in demanding environments, helping minimize nuisance trips and maintenance.

What problems it solves

When a branch circuit draws more current than it can safely handle, or when a short circuit occurs, the ED41B090L interrupts power quickly and reliably. The thermal element handles gradual overloads to prevent unnecessary outages, while the magnetic mechanism snaps into action during high‑fault conditions. This means fewer unexpected trips, safer operation, and quicker restoration after a fault.

Ideal for whom and where

• Homes and condominiums with high‑demand circuits (think HVAC, water heating, or EV charging) that require a solid 90A protection point at 120V.
• Commercial spaces, small offices, and retail environments needing dependable branch circuit protection in Siemens panelboards.
• Light industrial applications where vibration resistance and durable bolt‑on mounting contribute to long‑term panel reliability.

How it compares to alternatives

Compared to non‑bolt‑on or less robust breakers, the ED41B090L emphasizes a secure, vibration‑tolerant connection and a precise thermal‑magnetic trip profile, which translates to more consistent protection performance in panels that experience movement or frequent cycling. Its OEM compatibility eliminates common integration headaches when upgrading or expanding existing Siemens equipment.

Practical tips for installation and use

• Verify your panelboard is rated for 90A, 120V, and supports bolt‑on single‑pole devices before installation.
• Use the manufacturer’s torque specifications for bolt‑on mounting to ensure a tight, reliable connection.
• Place this breaker in a dedicated slot within the panelboard or loadcenter to maintain proper trip coordination with neighboring breakers.
• Regularly inspect bus connections for signs of wear or loosening, especially in environments with vibration or temperature swings.

Technical snapshot

• Manufacturer: Siemens
• Part Number: ED41B090L
• Type: Thermal‑magnetic molded case circuit breaker
• Amperage Rating: 90A
• Voltage Rating: 120V
• Poles: 1
• Mounting Style: Bolt‑on
• Application: Branch circuit overcurrent and short‑circuit protection

For reliable, long‑lasting protection in Siemens panelboards and loadcenters, the ED41B090L delivers a precise balance of secure installation, dependable protection, and compatibility that makes it a practical choice for both upgrades and new installations.