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Phoenix REL-IR2/L-120AC/2X21 Single Relay
The Phoenix REL-IR2/L-120AC/2X21 Single Relay (Part No: 2903667 ) offers a 120 V ACnominal input voltage UN, 93.6 V AC ... 165.6 V AC 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-IR2/L-120AC/2X21 |
Phoenix REL-IR2/L-120AC/2X21 Single Relay β Technical Specifications
| Specification | Value |
|---|---|
| Product type | Single relay |
| Mechanical service life | approx. 2x 107 cycles |
| Insulation | Basic insulation |
| Overvoltage category | III |
| Pollution degree | 3 (Rated voltage of 230 V) |
| Service life electrical | see diagram |
| Maximum power dissipation for nominal condition | 1.56 W |
| Test voltage (Winding/contact) | 2.5 kVrms (50 Hz, 1 min., winding/contact) |
| Test voltage (Changeover contact/changeover contact) | 2.5 kVrms (50 Hz, 1 min., changeover contact/changeover contact) |
| Rated insulation voltage | 250 V AC |
| Rated surge voltage | 4 kV |
| Nominal input voltage UN | 120 V AC |
| Input voltage range | 93.6 V AC ... 165.6 V AC |
| Drive and function | monostable |
| Drive (polarity) | non-polarized |
| Typical input current at UN | 13 mA |
| Typical response time | - |
| Coil voltage | - |
| Status display | LED (yellow) |
| Contact switching type | 2 changeover contacts |
| Type of switch contact | Single contact |
| Contact material | AgNi |
| Maximum switching voltage | 250 V AC/DC |
| Minimum switching voltage | 5 V (At 24 mA) |
| Limiting continuous current | 12 A |
| Maximum inrush current | 30 A (20 ms, N/O contacts) |
| Min. switching current | 5 mA (at 24 V) |
| Interrupting rating (ohmic load) max. | 288 W (at 24 V DC) |
| Connection method | Plug-in connection |
| Width | 21.2 mm |
| Height | 27.5 mm |
| Depth | 35.6 mm |
| Degree of protection | RT I |
| Degree of protection (Installation location) | - |
| Ambient temperature (operation) | -40 Β°C ... 55 Β°C |
| Ambient temperature (storage/transport) | -40 Β°C ... 85 Β°C |
| Standards/regulations | IEC 60664 |
| Mounting type | - |
| Mounting position | any |
| Mains frequency | 50/60 Hz |
| Typical release time range | 5 ms ... 20 ms (depending on phase relation) |
| Coil resistance | - |
| Switching capacity | - |
| Motor load according to UL 508 | 1/2 HP, 240 V AC |
Phoenix Contact presents the REL-IR2/L-120AC/2X21 (Part No: 2903667), a high-reliability Single Relay designed for dependable switching at 120 V AC input. This Phoenix Input Voltage 120 V AC Single Relay ensures stable operation in industrial control panels and automation systems. It features two changeover contacts made from AgNi material, offering high conductivity and long contact life. The relay supports a wide operating voltage range of 93.6 V AC to 165.6 V AC, making it suitable for variable grid conditions and control circuits.
Engineered with robust construction, the REL-IR2/L-120AC/2X21 handles up to 12 A continuous current and 30 A inrush current (20 ms) for demanding electrical loads. It delivers excellent electrical isolation, tested at 2.5 kVrms between winding and contact as well as contact-to-contact, ensuring user and equipment safety. Designed for 250 V AC/DC maximum switching voltage and 5 mA minimum switching current, it performs accurately across high and low signal levels. The mechanical service life reaches approximately 20 million cycles, supported by basic insulation, Overvoltage Category III, and IEC 60664 compliance. Power dissipation is limited to 1.56 W, improving thermal performance and operational reliability even under long duty cycles.
Compact in design with dimensions 21.2 mm Γ 27.5 mm Γ 35.6 mm, the relay uses a plug-in connection for easy integration and a yellow LED indicator for visual status monitoring. Operating between β40 Β°C and +55 Β°C, it maintains consistent performance in harsh industrial conditions. The REL-IR2/L-120AC/2X21 exemplifies Phoenix Contactβs commitment to delivering robust, efficient, and globally trusted components for automation systems where accuracy, durability, and safety are non-negotiable.
The Phoenix Contact Single Relay range, including the REL-IR2/L-120AC/2X21, is used widely in control panels, motor starters, and safety circuits requiring AC signal switching. It plays a key role in relay logic, load control, and power feedback loops within automation panels. Engineers appreciate its plug-in configuration, fast response, and LED status indication, which make troubleshooting simpler. Maintenance teams prefer this relay for retrofitting applications where space is limited but reliability is essential. Students and technicians can use it to study AC relay principles, switching loads, and contact wear patterns. With long mechanical life, low power loss, and stable performance, the REL-IR2/L-120AC/2X21 ensures dependable operation in demanding industrial automation projects.
