CH340SW - 40 Amp Switching Neutral Circuit Breaker

CH340SW - 40 Amp Switching Neutral Circuit Breaker

When you need a breaker that handles more than the basics, the CH340SW is a solid choice. It’s built for setups where the neutral needs to be switched along with the hot legs—something you’ll run into with certain multi-wire branch circuits or more sensitive electrical configurations. What makes this one different is its switching-neutral design. Instead of just interrupting the hot legs, it disconnects the neutral at the same time. That extra step can make a real difference in safety and system performance, especially in the right applications. It’s rated at 40 amps and designed on the CH frame, so it fits into compatible panels without any hassle. The plug-on style keeps installation simple, and the common trip mechanism ensures everything trips together if there’s a fault—no guessing, no partial disconnects.

Key Features and Benefits

• Switching Neutral – Disconnects neutral and hot legs together, which is important in certain circuit setups
• 3-Pole Breaker – Two hot legs plus one neutral pole
• 40 Amp Rating – Works well for mid-range electrical loads
• 10k AIC @ 120/240V – Handles fault interruptions reliably
• Common Trip – All poles trip at once for safer operation
• Plug-On Design – Installs quickly into CH panelboards
• Compact Size – Doesn’t take up unnecessary space in the panel

Technical Specifications

• Part Number: CH340SW
• Poles: 3
• Amperage: 40A
• Voltage: 120/240 VAC
• A.I.C. Rating: 10k
• Frame Type: CH
• Trip Type: Common Trip
• Mounting: Plug-On
• Configuration: 2 hot poles + 1 neutral (switching neutral)
• Dimensions:
  • Height: 3.19 in
  • Width: 2.25 in
  • Depth: 2.5 in

Material Compliance and Certifications

• This breaker is built to meet UL standards, aligning with widely accepted safety and performance expectations for electrical equipment. That means it’s suitable for use in properly designed residential and light commercial systems where code compliance matters.

Where It Works Best

• Multi-wire branch circuits
• Panels where the neutral needs to be disconnected
• Residential upgrades with more complex wiring
• Light commercial applications
• Equipment that benefits from balanced load protection