TE Connectivity W58-XB1A4A-20 Thermal Circuit Breaker, 20A 250VAC 50VDC

The TE Connectivity W58‑XB1A4A‑20 is a push‑to‑reset thermal circuit breaker designed to provide reliable overcurrent protection for AC and DC electrical circuits. It combines switching and protection functions in a compact panel‑mount design, making it suitable for industrial, commercial, and equipment power distribution applications. Technical specifications Manufacturer: TE Connectivity (formerly Potter & Brumfield) Product series: W58 Part number: W58‑XB1A4A‑20 Device type: Thermal circuit breaker Trip mechanism: Thermal Reset type: Manual push‑to‑reset Rated current: 20 A Rated voltage (AC): 250 VAC Rated voltage (DC): 50 VDC Frequency: 50/60 Hz Number of poles: 1‑pole Trip‑free design: Yes Terminal type: Blade / quick‑connect terminals Terminal size: 6.3 mm (0.250 in) Mounting type: Panel mount Actuator style: Push button reset Housing material: High‑strength thermoplastic Housing color: Black Dielectric strength: 1500 VAC minimum Insulation resistance: >100 MΩ at 500 VDC Operating temperature range: ‑30 °C to +60 °C Storage temperature range: ‑40 °C to +85 °C Endurance: Up to 10,000 operations Protection class: Ignition protected Agency approvals: UL Recognized, CSA Certified, VDE Approved Compliance markings: CE Typical applications: Power supplies, industrial equipment, control panels, HVAC equipment, machinery protection Installation orientation: Any Country of manufacture: China Please review pictures carefully and let us know if you have any questions!