CAREL MD33A5ER00MASTACELLA2 Controller

CAREL MasterCella MD33A5ER00 Controller (MASTACELLA2) is a compact three‑output, 230 V AC electronic controller designed for medium‑temperature refrigeration applications. It drives up to three relay loads (4 A per output, resistive load rating) and accepts two NTC temperature probes plus three digital inputs for external signals. A built‑in green LED display shows process values with 2.5 digits and an automatic decimal point (−19.9 to +19.9), while a real‑time clock and HACCP data logging support traceability. Features include a buzzer, infrared compatibility, and a keypad for local setup, with pump‑down and condenser management options and second‑compressor management with rotation on selected configurations. The MD33A5ER00 operates from 230 VAC and is suited to MasterCella installations in cold rooms, cabinet displays, and other medium‑temperature refrigerated systems; it also supports connecting a high‑temperature probe up to 150 °C for expanded monitoring. This model is part of CAREL’s MasterCella family, offering a compact, field‑configurable control solution for reliable temperature management in commercial refrigeration environments.