Phoenix Contact REL-MR-BL-230AC/21HC Single Relay – 230 V AC Coil, 1 Changeover Contact (SPDT), Compact Plug-in Miniature Power Relay (Item 2906288)

Detailed Description:

The Phoenix Contact REL-MR-BL-230AC/21HC (Item No. 2906288) is a premium plug-in miniature power relay engineered for industrial applications requiring a 230 V AC coil voltage and a single changeover (SPDT) contact configuration — ideal for switching moderate to high continuous currents in compact control panel environments. 

Key Features & Benefits:

• 230 V AC nominal coil voltage – suitable for standard mains AC control circuits (nominal voltage, 50/60 Hz). 

• Changeover contact (SPDT) – includes one common contact switching between normally closed (NC) and normally open (NO) paths, giving flexible control options. 

• High continuous current capability – The “BL” series and “HC” designation indicate suitability for higher continuous load currents compared with standard miniature relays. For similar variants the limiting continuous current is ~16 A. 

• Compact plug-in format – Slim width (~12.7 mm), height ~29 mm, depth ~15.7 mm making it ideal for dense control-panel mounting and modular socket systems. 

• Robust environmental ratings – Operating ambient temperature down to -40 °C up to +85 °C; insulation and surge withstand capabilities per industrial standards. 

Typical Applications:

• As an interface relay between PLC logic outputs and mains-voltage loads (230 V AC) in industrial automation, machinery, process control units.

• Compact control cabinets, where panel space is constrained but reliable switching of 230 V AC loads is required.

• Replacement of standard relays in modular socket systems, especially in retrofit or upgrade scenarios.

Installation & Use Notes:

• Confirm the control coil supply is 230 V AC and within the permissible input voltage range for reliable actuation. 

• Ensure the load connected to the changeover contact does not exceed the rated continuous and inrush current capacities.

• Use compatible relay socket / base suitable for the plug-in type; maintain required clearances and ambient conditions as per manufacturer datasheet.

• Adequate wiring and protective components (fuses, circuit breakers) should be used in the load circuit to ensure safe and reliable operation.

Scope of Delivery:
One (1) Phoenix Contact REL-MR-BL-230AC/21HC relay unit, Item No. 2906288, as described.

Manufacturer / Item Number:
Phoenix Contact — 2906288

Summary:
The REL-MR-BL-230AC/21HC is a high-quality, compact plug-in miniature power relay with 230 V AC coil and single changeover contact, designed for robust industrial use and high-current switching in limited-space installations. It’s an excellent choice when you need reliable switching of mains voltage loads from control logic, especially in automation, control panels or retrofit applications.