3VA4120-4ED14-0AA0 - 20 Amp Circuit Breaker

3VA4120-4ED14-0AA0  -  20 Amp Circuit Breaker

The Siemens 3VA4120-4ED14-0AA0 is a dependable 20-amp, single-pole molded-case circuit breaker engineered to protect your electrical system from overloads and short circuits. Compact yet powerful, it combines precise thermal-magnetic protection with a compact footprint so you don’t have to sacrifice space for safety. Whether you’re upgrading a lighting run, safeguarding a dedicated appliance circuit, or protecting sensitive electronics, this breaker delivers a fast, consistent response to electrical faults.

Key Features and Benefits

• Fast protection response: The built-in TM210 thermal-magnetic trip unit reacts immediately to overloads or short circuits, keeping your circuits safe.
• High interrupting capacity: Rated for 25 kA at 277 V AC, this breaker handles demanding fault conditions without failing.
• Ease of installation: Its streamlined design and pre-installed load-side lugs simplify wiring and reduce installation time.
• Space-saving form: At just over 5 inches in height and under 1 lb in weight, it fits neatly in most standard panels.
• Trusted safety standard: As a UL-listed product, this Siemens breaker meets rigorous industry benchmarks for performance and reliability.

Technical Specifications

• Poles: 1
  
• Amperage: 20 A
  
• Interrupting Rating (A.I.C.): 25 kA @ 277 VAC
  
• Frame: 3VA41 (SEAB / Class S breaking capacity)
  
• Trip Unit: TM210 thermal-magnetic, fixed Ir / fixed Ii
  
• Height: ~5.1 in
  
• Weight: ~1 lb
  

Material Compliance and Certifications

• UL Listed for safety and compliance: Designed and manufactured by Siemens under strict material and quality standards.
• 3VA series adherence: The 3VA series adheres to low-voltage molded-case breaker norms and is supported by Siemens’ technical documentation and accessory ecosystem.

Where It Works Best

• This single-pole breaker is ideal for residential and light commercial applications. Use it on lighting circuits, small appliances, HVAC controls, or branch circuits requiring dependable trip protection. Its compact size and strong interrupting rating make it especially suitable in panelboards with limited space or in systems where safety margins matter most.