Procurement teams shortlist REL-MR-24DC-21AU-MS with SMPS Phoenix, Phoenixcontact Rel Ir Bl L 230Ac 4X21 and Phoenixcontact Phoenix Contact Industrial Ethernet Switches, aligning budget approvals, warranty terms, and multisite availability for smoother rollout across plants.
Phoenix REL-MR- 24DC/21AU/MS Single Relay
The Phoenix REL-MR- 24DC/21AU/MS Single Relay (Part No: 2909645 ) offers a 24 V DCnominal input voltage UN, 14.4 V DC ... 66 V DC input voltage range, 250 V AC switching voltage, Plug / solder connection method. Manufactured by Phoenix under the Phoenix Single Relay category, this model belongs to the Phoenix REL Series.

| Brand | Phoenix Contact |
| Product Type | Single Relay |
| Model Number | REL-MR- 24DC/21AU/MS |
Phoenix REL-MR- 24DC/21AU/MS Single Relay – Technical Specifications
| Specification | Value |
|---|---|
| Product type | Single relay |
| Mechanical service life | 1x 107 cycles |
| Insulation | - |
| Overvoltage category | III |
| Pollution degree | 3 |
| Service life electrical | - |
| Maximum power dissipation for nominal condition | 0.17 W |
| Test voltage (Winding/contact) | 4 kV AC (50 Hz, 1 min., winding/contact) |
| Test voltage (Changeover contact/changeover contact) | - |
| Rated insulation voltage | - |
| Rated surge voltage | - |
| Nominal input voltage UN | 24 V DC |
| Input voltage range | 14.4 V DC ... 66 V DC |
| Drive and function | monostable |
| Drive (polarity) | non-polarized |
| Typical input current at UN | 7 mA |
| Typical response time | 2.5 ms |
| Coil voltage | - |
| Status display | - |
| Contact switching type | 1 changeover contact |
| Type of switch contact | Single contact |
| Contact material | AgSnO |
| Maximum switching voltage | 250 V AC |
| Minimum switching voltage | 5 V (at 100 mA) |
| Limiting continuous current | 6 A |
| Maximum inrush current | 50 mA |
| Min. switching current | 10 mA (at 12 V) |
| Interrupting rating (ohmic load) max. | 140 W (at 24 V DC) |
| Connection method | Plug / solder connection |
| Width | 5 mm |
| Height | 28 mm |
| Depth | 16 mm |
| Degree of protection | RT II |
| Degree of protection (Installation location) | - |
| Ambient temperature (operation) | -40 °C ... 85 °C |
| Ambient temperature (storage/transport) | -40 °C ... 85 °C |
| Standards/regulations | IEC 60664 |
| Mounting type | - |
| Mounting position | any |
| Mains frequency | - |
| Typical release time range | - |
| Coil resistance | 3390 Ω ±10 % (at 20 °C) |
| Switching capacity | 2 A (at 24 V, DC13) |
| Motor load according to UL 508 | 1/4 HP, 240 - 277 V AC (N/O contact) |
| Input power dissipation for UN | - |
| 3-phase motor load | - |
| Product family | - |
| Relay type | - |
| Test voltage () | - |
| Degree of protection (Relay) | - |
| Inrush current, minimum | - |
| Non-operate voltage | - |
| Safe operate voltage | - |
| Test voltage (N/O contact / N/O contact) | - |
Get A Quote for Phoenix 24 V DC Input Voltage Single Relay REL-MR- 24DC/21AU/MS part no: 2909645 at the best price. Here are the brief Technical Specifications of REL-MR- 24DC/21AU/MS, 2909645 are mechanical service life of 1x 107 cycles, designed for demanding industrial applications. The sensor operates at a nominal input voltage of 24 V DC, with an input voltage range of 14.4 V DC ... 66 V DC. The typical input current at UN is 7 mA with a response time of 5 ms. The sensor supports a maximum switching voltage of 250 V AC, and a minimum switching voltage of 5 V (at 100 mA). It has a limiting continuous current of 6 A, with a maximum inrush current of 50 mA, and a minimum switching current of 10 mA (at 12 V). The interrupting rating for ohmic loads is 140 W (at 24 V DC). The connection method is via a Plug / solder connection, with a degree of protection rated at RT II. The sensor operates reliably in ambient temperatures ranging from -40 °C ... 85 °C. It's Time to get a Quote for your requirement of Phoenix 24 V DC Input Voltage Single Relay. We guarantee unmatched pricing and unparalleled support compared to other Distributors.







