Banner Engineering Corporation ES-UA-5A Safety Relay

The Banner Engineering ES-UA-5A Safety Relay Module is a compact, 4‑NO/1‑NC safety relay designed for E‑Stop, rope pull, and interlock monitoring in industrial guarding systems. It accepts a dual or single channel safety input and provides four normally‑open safety outputs rated 6 A, plus an auxiliary normally‑closed output rated 5 A and two solid‑state 0.1 A outputs for signaling or auxiliary functions. The unit features self‑checking circuitry with auto or manual reset, a removable terminal block, and a slim 45 mm width to fit DIN rail assemblies; overall dimensions are 84 × 45 × 118 mm. Power is drawn from either 115 V ac or 12–24 V dc, with a nominal consumption of 4 W (7 VA). Enclosure protection is IP20, and the module is rated for operation up to 50 °C with up to 90% humidity at 50 °C. Internal life figures include about 50 million mechanical operations and up to 1,000,000 electrical cycles at 450 VA, with a safety category of e and a SIL rating of 3, making it suitable for critical safety circuits. The ES-UA‑5A supports simultaneous or concurrent input operation, a single safe input channel, and a 2NC or 1NC input configuration, and it is intended to work as part of Banner’s ES/GM family for emergency stop and guard monitoring. This module’s robust 4 NO safety outputs, coupled with a 5 A NC auxiliary and two low‑current solid‑state outputs, provides flexible integration into control systems while maintaining clear, watchdog‑driven safety logic.