myMectronic
myMectronic

A Premier B2B Part Search

Phoenix Contact RELMR45DC21 Single Pole Miniature Power Relay

The PHOENIX CONTACT REL-MR- 4,5DC/21 is a plug-in miniature power relay designed for reliable performance in diverse industrial environments. Its key features include safe isolation according to DIN EN 50178, a high degree of protection up to RT III, and power contacts capable of handling up to 6A. This relay is ideal for applications requiring compact size, robust performance, and secure switching capabilities. It's commonly used in automation systems, control circuits, and other industrial machinery where reliable power distribution is essential.

Authorized Distributors
Part No:REL-MR-45DC/21
Stock:0
Inv Date:05-29-2026
Price: N/A
Buy/RFQ:
Part No:REL-MR-4-5DC/21
Stock:60
Inv Date:05-28-2026
Price: Unit price: $18.81
Buy/RFQ:
Part No:REL-MR-4-5DC/21
Stock:60
Inv Date:05-28-2026
Price: Unit price: $18.81
Buy/RFQ:

Phoenix Contact RELMR45DC21 Single Pole Miniature Power Relay Specifications:

  • Packing unit: 1 pc
  • Minimum order quantity: 10 pc
  • Weight per Piece (excluding packing): 6.000 g
  • Custom tariff number: 85364900
  • Country of origin: Czech Republic
  • Width: 5 mm
  • Height: 28 mm
  • Depth: 15 mm
  • Ambient temperature (operation): -40 °C ... 85 °C
  • Ambient temperature (storage/transport): -40 °C ... 85 °C
  • Degree of protection: RT III
  • Nominal input voltage UN: 4.5 V DC
  • Input voltage range in reference to UN: see diagram
  • Typical input current at UN: 38 mA
  • Typical response time: 5 ms
  • Typical release time: 2.5 ms
  • Coil resistance: 119 Ω ±10 % (at 20 °C)
  • Power dissipation for nominal condition: 0.17 W
  • Contact type: 1 PDT
  • Type of switch contact: Single contact
  • Contact material: AgSnO
  • Maximum switching voltage: 250 V AC/DC
  • Minimum switching voltage: 5 V (at 100 mA)
  • Min. switching current: 10 mA (at 12 V)
  • Maximum inrush current: 10 A (4 s)
  • Limiting continuous current: 6 A
  • Interrupting rating (ohmic load) max.: 140 W (at 24 V DC)
  • Switching capacity: 2 A (at 24 V, DC13)
  • Motor load according to UL 508: 1/4 HP, 240 - 277 V AC (N/O contact)
  • Test voltage relay winding/relay contact: 4 kV AC (50 Hz, 1 min.)
  • Operating mode: 100% operating factor
  • Mechanical service life: 2x 10^7 cycles
  • Mounting position: any
  • Connection method: Solder connection
  • Standards and Regulations - Connection in acc. with standard: CUL
  • Standards/regulations: IEC 60664, EN 50178, EN 61810-1
  • Pollution degree: 3
  • Overvoltage category: III
  • China RoHS: Environmentally friendly use period: unlimited = EFUP-e

Buy the REL-MR- 4 5DC/21 PHOENIX CONTACT Single Pole Miniature Power Relay | myMectronic

Purchase the PHOENIX CONTACT REL-MR- 4,5DC/21 securely online and ensure reliable power relay functionality for your industrial applications.

Buy Now

Frequently Asked Questions

Where can I buy Phoenix Contact RELMR45DC21?

You can click on the BUY or RFQ button to purchase RELMR45DC21 from an authorized Phoenix Contact distributor.

How do I troubleshoot issues or seek technical support for part RELMR45DC21?

You can download the RELMR45DC21 datasheet or visit the Phoenix Contact website for support.

Who is the manufacturer of RELMR45DC21?

Phoenix Contact

Phoenix Contact Part List

Browse and search other Phoenix Contact parts, locate datasheets and stock

Sponsored by