Siemens ED42B040 is a two‑pole molded‑case circuit breaker in the ED4 family, rated 40 A at 480 VAC (older catalogs also reference it as ITE ED42B040). It uses a thermal‑magnetic trip unit and provides an 18 kA interrupt rating at 480 VAC. It is intended for low‑voltage distribution applications requiring 40 A protection at 480 VAC, making it suitable for commercial and light‑industrial panel setups that require reliable overcurrent protection.
