The HCES1-12S05 is a single-phase, controllable, hysteretic over-current control relay with Power Modules SIP7 RoHS manufactured by WIER. It is designed for use in single-phase, 120/240V AC circuits up to 12A for overload and/or short-circuit protection. The relay can detect current in either AC or DC circuits and is suitable for a variety of applications including industrial machinery, motors, pumps, transformers, water heaters, lighting racks and controllers, switches, household appliances, etc. Its patented hysteresis technology enables the relay to detect current anomalies with extreme accuracy, so it can provide more accurate and reliable protection. The HCES1-12S05 is RoHS compliant and is built to last with the sturdy Power Modules SIP7 design.