Circuit Breaker, 5SY4 Series, 40A, 1+N Pole, 277V AC, 10kA at 230V AC, D Curve MPN:5SY45408
Circuit Breaker, 5SY4 Series, 40A, 1+N Pole, 277V AC, 10kA at 230V AC, D Curve
Protect your industrial circuits with the Siemens 5SY4 Series 40A Circuit Breaker. This reliable device safeguards against electrical overloads and short circuits, ensuring safe and efficient operation. With a maximum air rating of 10kA at 230V AC and a thermal magnetic trip type, it provides robust protection for your equipment. Suitable for use in industrial applications, it meets UL Type UL 1077 standards and can handle wire sizes from 14 AWG to 4 AWG. Its compact design and DIN rail mounting style make it easy to integrate into your system, providing peace of mind and minimizing downtime.
Top product features:
- Protects against overcurrent conditions with a 40A rating
- Provides a thermal magnetic trip type for reliable protection
- Mounts on a DIN rail for easy installation in industrial applications
Top product applications:
- Industrial
- Circuit Breaker Actuator Toggle
- DIN Rail Mounting Style
IEC Supplementary Protector, Amps 40 A, AC Voltage Rating 277V AC, Max. AIR Rating 10kA at 230V AC, Series 5SY4, Curve Type D, DC Voltage Rating 72V DC, Number of Poles 1+N, Phase 1, Circuit Breaker Actuator Toggle, Circuit Breaker Mounting Style DIN Rail, Meets UL Type UL 1077, Terminal Connection Screw Clamp, Trip Type Thermal Magnetic, Application Industrial, Min. Wire Size 14 AWG, Max. Wire Size 4 AWG, Length 3.62 in, Width 1.57 in, Depth 3.3 in
Additional Information
- Country of Origin: DE
- Drop Ship Item: Yes
- Blind Ship Eligible: No
- LTL Freight Required: No
- Lead Time: Ships in 30 days
- Minimum Order Quantity: 1
- Unit of Measure: EA
- Package Length: 3.62
- Package Width: 1.57
- Package Height: 3.30
- Package Weight: 0.01
Product info last updated on February 23, 2026 11:09pm UTC
Category: Circuit Protection