Phoenix Contact CM50 Modules CM50-PS-120-230AC/24DC/2.5/F

Technical Dossier

Product Details And Specifications

Phoenix Contact CM50 Series Technical Notes

The Phoenix Contact CM50 series is a standardized family of DIN-rail-mounted power supply and interface modules deployed across global heavy industry sectors including petrochemical refineries, nuclear power generation facilities, offshore platforms, and continuous-process chemical plants. The CM50 form factor is defined by its 50 mm housing width, enabling high-density panel installations where space allocation per module is a critical engineering constraint. These units are integrated into distributed control system (DCS) marshalling cabinets, PLC I/O racks, and field junction enclosures where stable 24 VDC bus power and signal conditioning are mandatory for process continuity. The primary power supply variant in this series — CM50-PS-120-230AC/24DC/2.5/F — delivers 2.5 A at 24 VDC from a universal 120–230 VAC input, with functional earth (F) connection for EMC compliance in industrial environments.

The Evolution of CM50 Architecture

Phoenix Contact introduced the CM (Compact Module) platform as a successor to earlier MINI-PS and QUINT-PS form factors, targeting applications requiring a balance between output current density and cabinet footprint. The CM50 series operates within the broader TRIO POWER and STEP POWER ecosystem but occupies a distinct niche: fixed-width 50 mm housings with integrated status signaling and functional earth terminals.

Early CM50 variants were designed for single-phase AC input with narrow input voltage windows (110 VAC or 230 VAC fixed). Subsequent revisions introduced the universal AC input range (85–264 VAC), eliminating the need for input voltage selection switches and reducing installation error risk in multi-region deployments. The /F suffix designation indicates the inclusion of a functional earth terminal block, a requirement under IEC 61010-1 for equipment installed in environments with high electromagnetic interference, such as variable-frequency drive (VFD) motor control centers.

CM50 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly deployed models within the Phoenix Contact CM50 series, organized by functional category:

Power Supply Modules

CM50-PS-120-230AC/24DC/2.5/F: 120–230 VAC input, 24 VDC/2.5 A output, functional earth, 50 mm DIN-rail PSU.
CM50-PS-120-230AC/24DC/5/F: 120–230 VAC input, 24 VDC/5 A output, functional earth, 50 mm housing.
CM50-PS-120-230AC/24DC/1.3/F: 120–230 VAC input, 24 VDC/1.3 A output, compact low-load power supply.
CM50-PS-120-230AC/12DC/2/F: 120–230 VAC input, 12 VDC/2 A output, for 12 V bus applications.
CM50-PS-120-230AC/48DC/1/F: 120–230 VAC input, 48 VDC/1 A output, telecom and HART loop supply.
CM50-PS-24AC/24DC/2.5/F: 24 VAC input, 24 VDC/2.5 A output, transformer secondary input variant.

Interface & Signal Conditioning Modules

CM50-IFS-24DC/UNI: Universal input signal conditioner, 24 VDC supply, NAMUR/switch/analog input compatible.
CM50-IFS-24DC/2x2: Dual-channel signal isolator, 24 VDC, 2-wire to 2-wire passive loop isolation.
CM50-IFS-24DC/PT100: RTD input module, PT100/PT1000 sensor interface, 24 VDC powered.
CM50-IFS-24DC/TC: Thermocouple input isolator, Type J/K/T/E/N/R/S/B, 24 VDC supply.
CM50-IFS-24DC/4-20MA: 4–20 mA loop-powered signal isolator, passive input, active output.
CM50-IFS-24DC/HART: HART-transparent signal conditioner, preserves HART communication over 4–20 mA loop.

Digital I/O & Relay Modules

CM50-DO-24DC/1: Single-channel digital output relay, 24 VDC coil, SPDT contact, 6 A rated.
CM50-DI-24DC/2: Dual-channel digital input isolator, 24 VDC, NAMUR EN 60947-5-6 compliant.
CM50-RO-24DC/2x1: Dual relay output module, 24 VDC coil, 2x SPST-NO contacts, 5 A/250 VAC.