Phoenix Contact 2987891 REL-MR-24AC/21HC/MS Single relay

The REL-MR- 24AC/21HC/MS is a Phoenix Contact plug-in miniature relay with one changeover power contact and a 24 V AC coil. Built-in features include a test button, mechanical switching position indicator, and integrated status LED. It handles up to 16 A continuous current with a maximum switching voltage of 250 V AC/DC.

Technical specifications:

• Part designation: REL-MR- 24AC/21HC/MS
• Catalog number: 2987891
• Manufacturer: Phoenix Contact
• EAN: 4046356481021
• Product type: Single relay
• Nominal input voltage: 24 V AC
• Input voltage range: 18.7 V AC - 34.8 V AC
• Contact switching type: 1 changeover contact
• Contact material: AgNi
• Limiting continuous current: 16 A
• Maximum inrush current: 32 A (20 ms)
• Maximum switching voltage: 250 V AC/DC
• Interrupting rating: max. 4000 VA (at 250 V AC)
• Test voltage (winding/contact): 5 kV AC (50 Hz, 1 min)
• Typical input current at UN: 32 mA
• Mechanical service life: 5 x 10^6 cycles
• Connection method: plug/solder connection
• Dimensions (W x H x D): 12.7 mm x 29 mm x 25 mm
• Weight (excl. packing): 18.34 g
• Ambient temperature (operation): -40°C to 70°C
• Ambient temperature (storage): -40°C to 85°C
• Approvals: cUL, UL (File E195083), EAC, VDE (40027210)
• Pack size: 10 pc
• Country of origin: CN

Features and benefits:

• 16 A switching current handles resistive and motor loads up to 1 HP at 240 V AC per UL 508
• Test button enables detectable manual operation without energising the coil
• Mechanical switch position indicator provides instant visual contact status confirmation
• Integrated status LED confirms coil energisation at a glance
• Wide input voltage tolerance (18.7 V - 34.8 V AC) accommodates supply fluctuations

Applications:

• Relay logic and power switching in industrial control panels
• Motor starting and stopping circuits up to 1 HP at 240 V AC
• HVAC and building automation control systems
• Signal and power switching in corrosive or harsh environments (ISA-S71.04 G3 rated)

Compliant with EN 61810-1, VDE 0435-201, and EN 50178. Approved to cUL and UL (File E195083), EAC, and VDE (40027210). Corrosive gas tested to ISA-S71.04 G3 Harsh Group.

Also known as: Phoenix Contact REL-MR- 24AC/21HC/MS, Phoenix 2987891, Phoenix Contact 24VAC miniature relay.