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Phoenix REL-IR-BL-230AC/4X21 Single Relay
The Phoenix REL-IR-BL-230AC/4X21 Single Relay (Part No: 1032529 ) offers a 230 V ACnominal input voltage UN, 184 V AC ... 379.5 V AC (20 Β°C) input voltage range, 250 V AC/DC switching voltage, Plug-in 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-IR-BL-230AC/4X21 |
Phoenix REL-IR-BL-230AC/4X21 Single Relay β Technical Specifications
| Specification | Value |
|---|---|
| Product type | Single relay |
| Mechanical service life | 2x 107 cycles |
| Insulation | Basic insulation |
| Overvoltage category | III |
| Pollution degree | 2 |
| Service life electrical | see diagram |
| Maximum power dissipation for nominal condition | 1 VA |
| Test voltage (Winding/contact) | 2.5 kVrms (50 Hz, 1 min., winding/contact) |
| Test voltage (Changeover contact/changeover contact) | 2 kVrms (50 Hz, 1 min., changeover contact/changeover contact) |
| Rated insulation voltage | 250 V AC |
| Rated surge voltage | 5 kV |
| Nominal input voltage UN | 230 V AC |
| Input voltage range | 184 V AC ... 379.5 V AC (20 Β°C) |
| Drive and function | monostable |
| Drive (polarity) | non-polarized |
| Typical input current at UN | 4.4 mA (50 Hz) |
| Typical response time | - |
| Coil voltage | 230 V AC |
| Status display | - |
| Contact switching type | 4 changeover contacts |
| Type of switch contact | Single contact |
| Contact material | AgNi |
| Maximum switching voltage | 250 V AC/DC |
| Minimum switching voltage | 12 V (10 mA) |
| Limiting continuous current | 6 A |
| Maximum inrush current | 12 A (20 ms, N/O contacts) |
| Min. switching current | 10 mA (12 V) |
| Interrupting rating (ohmic load) max. | 144 W (24 V DC) |
| Connection method | Plug-in connection |
| Width | - |
| Height | - |
| Depth | - |
| Degree of protection | RT II |
| Degree of protection (Installation location) | β₯ IP54 (Installation location) |
| Ambient temperature (operation) | -40 Β°C ... 70 Β°C |
| Ambient temperature (storage/transport) | -40 Β°C ... 70 Β°C |
| Standards/regulations | EN 61810-1 |
| Mounting type | Plug-in mounting |
| Mounting position | any |
| Mains frequency | 50/60 Hz |
| Typical release time range | 5 ms ... 20 ms |
| Coil resistance | - |
| Switching capacity | - |
| Motor load according to UL 508 | - |
| 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) | - |
The Phoenix Contact REL-IR-BL-230AC/4X21 (Part No: 1032529) is engineered for stable and long-lasting performance in industrial environments. It operates at a nominal input voltage of 230 V AC and supports a wide input voltage range from 184 V AC to 379.5 V AC, making it suitable for both standard and fluctuating mains power conditions. With a typical input current of 4.4 mA (50 Hz), it ensures low power consumption while maintaining reliable signal integrity.
This Single Relay includes 4 changeover contacts made from AgNi contact material, offering strong conductivity and durability. It handles a maximum switching voltage of 250 V AC/DC and supports a limiting continuous current of 6 A, with a maximum inrush current of 12 A (20 ms). Its interrupting capacity is rated at 144 W at 24 V DC, suitable for resistive load switching. The minimum switching voltage of 12 V at 10 mA ensures accuracy in low-signal applications. With a mechanical service life of 20 million cycles and compliance with EN 61810-1, this relay is dependable for long-term usage across mission-critical industrial applications.
The REL-IR-BL-230AC/4X21 features basic insulation, a compact plug-in connection, and is protected to RT II standards, performing reliably in ambient temperatures from -40β―Β°C to +70β―Β°C. Its rugged design and phase-tolerant response time (5β20 ms) make it a suitable fit for power panels, PLC outputs, and control cabinets. Learn more about this model from the Phoenix Relay product page or explore the Phoenix Contact brand portfolio.
For maintenance engineers, panel builders, and electrical designers, the REL-IR-BL-230AC/4X21 provides reliable switching behavior, long service life, and versatile mounting. Students and automation trainees benefit from learning with this model, which provides a real-world example of AC-operated relays in industrial signaling and automation logic. Its consistent electrical performance and rugged construction make it a dependable choice across control environments.







