Phoenix Contact 2987972 REL-MR-230AC/21-21/MS Single relay

The REL-MR-230AC/21-21/MS is a Phoenix Contact plug-in miniature relay with 2 changeover contacts and a 230 V AC coil, suited for panel-mount automation and control wiring. It features an integrated test button, mechanical switching position indicator, and status LED for fast visual diagnostics without additional tools. The relay handles a maximum inrush current of 16 A and a limiting continuous current of 8 A, making it capable of driving resistive and motor loads in industrial environments.

Technical specifications:

• Part designation: REL-MR-230AC/21-21/MS
• Catalog number: 2987972
• Manufacturer: Phoenix Contact
• EAN: 4046356480987
• Product type: Single relay, plug-in miniature relay
• Pack size: 10 pc
• Coil voltage: 230 V AC, 50/60 Hz
• Input voltage range: 179.4 V AC - 333.5 V AC
• Typical input current at UN: 3.5 mA
• Drive: monostable, non-polarized
• Contact switching type: 2 changeover contacts
• Contact material: AgNi
• Maximum switching voltage: 250 V AC/DC
• Limiting continuous current: 8 A
• Maximum inrush current: 16 A (20 ms)
• Interrupting rating (ohmic load): max. 2000 VA at 250 V AC
• Motor load (UL 508): 1/2 HP at 240 V AC (N/O), 1/3 HP at 240 V AC (N/C)
• Test voltage, winding/contact: 5 kV AC (50 Hz, 1 min.)
• Test voltage, contact/contact: 2.5 kV AC (50 Hz, 1 min.)
• Maximum power dissipation: 0.81 W
• Mechanical service life: 5 x 10^6 cycles
• Dimensions (W x H x D): 12.7 mm x 29 mm x 25 mm
• Weight (excluding packing): 17.99 g
• Ambient temperature (operation): -40°C - 70°C
• Ambient temperature (storage/transport): -40°C - 85°C
• Connection method: plug / solder connection
• Country of origin: CN
• Approvals: UL Recognized, cUL Recognized (FILE E 195083), EAC, VDE
• Corrosive gas test: ISA-S71.04 G3 Harsh Group, EN 60068-2-60
• EU RoHS: compliant

Features and benefits:

• Integrated test button enables manual operation and commissioning without live control voltage
• Mechanical switching position indicator and status LED allow immediate visual confirmation of relay state
• Wide input voltage tolerance (179.4 V AC - 333.5 V AC) accommodates mains fluctuations on 230 V AC networks
• 16 A inrush current capability supports motor and inductive load switching
• Corrosive gas tested to ISA-S71.04 G3 Harsh Group, suitable for chemically demanding environments
• Wide operating temperature range of -40°C - 70°C covers outdoor and industrial enclosure installations

Applications:

• General-purpose relay switching in industrial control panels and automation cabinets
• Interface relay for PLC output isolation and signal amplification at 230 V AC mains level
• Motor starter auxiliary circuits requiring 1/2 HP 240 V AC switching capacity
• HVAC and building automation control loops with variable mains supply conditions
• Process control installations in harsh or corrosive-gas environments

Compliant with EN 61810-1, VDE 0435-201, and EN 50178. Compatible mandatory relay bases include the RIF-1-BPT/2X21 (item 2900931, push-in connection) and RIF-1-BSC/2X21 (item 2900930, screw connection), both for NS 35/7.5 DIN rail mounting.

Also known as: Phoenix Contact REL-MR-230AC/21-21/MS, Phoenix 2987972, Phoenix Contact 230VAC miniature relay 2CO, PC relay 2987972.