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STEP-PS/ 1AC/24DC/1.75 2868648 PHOENIX CONTACT Power supply unit
STEP-PS/ 1AC/24DC/1.75
2868648
PHOENIX CONTACT
1 Pcs.
Power supply unit
STEP POWER Primary Switch-On Power Supply for Rail Mounting, Input: Single Phase, Output: 24 V DC/1.75 A
Primary-switched STEP POWER power supply for DIN rail mounting, input: 1-phase, output: 24 V DC/1.75 A
Automation > DC-power supply
Power Supplies (PS)
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Power supply unit STEP-PS/ 1AC/24DC/1.75 from Phoenix Contact provides reliable conversion of alternating and direct current inputs for various industrial automation tasks. Such power supply units are normally installed inside control cabinets to deliver stable operating voltage to field sensors, controllers, and low-power actuators. Pricing, availability, and lead time are confirmed per enquiry through an RFQ.
- AC operation Nominal input voltage range: 100 V AC ... 240 V AC
- Input voltage range: 85 V AC ... 264 V AC
- Input voltage range AC: 85 V AC ... 264 V AC
- Input voltage range DC: 95 V DC ... 250 V DC
- Voltage type of supply voltage: AC/DC
- Inrush current: < 15 A (typical)
- Inrush current integral (I 2 t): < 0.6 A 2 s
- AC frequency range: 45 Hz ... 65 Hz
- Frequency range DC: 0 Hz
- Mains buffering time: typ. 25 ms (120 V AC)
- Current consumption: 0.6 A (120 V AC)
- Nominal power consumption: 84.2 VA
- Protective circuit: Transient surge protection
- Varistor:
- Power factor (cos phi): 0.57
- Typical response time: < 0.5 s
- Input fuse: 3.15 A (slow-blow, internal)
More info
▲Technical data
Input data
| AC operation | |
| Nominal input voltage range | 100 V AC ... 240 V AC |
| Input voltage range | 85 V AC ... 264 V AC |
| 95 V DC ... 250 V DC | |
| Input voltage range AC | 85 V AC ... 264 V AC |
| Input voltage range DC | 95 V DC ... 250 V DC |
| Voltage type of supply voltage | AC/DC |
| Inrush current | < 15 A (typical) |
| Inrush current integral (I2t) | < 0.6 A2s |
| AC frequency range | 45 Hz ... 65 Hz |
| Frequency range DC | 0 Hz |
| Mains buffering time | typ. 25 ms (120 V AC) |
| typ. 150 ms (230 V AC) | |
| Current consumption | 0.6 A (120 V AC) |
| 0.3 A (230 V AC) | |
| Nominal power consumption | 84.2 VA |
| Protective circuit | Transient surge protection; Varistor |
| Power factor (cos phi) | 0.57 |
| Typical response time | < 0.5 s |
| Input fuse | 3.15 A (slow-blow, internal) |
| Recommended breaker for input protection | 6 A ... 16 A (Characteristics B, C, D, K) |
Output data
| Efficiency | > 89 % (for 230 V AC and nominal values) |
| Output characteristic | U/I |
| Nominal output voltage | 24 V DC |
| Setting range of the output voltage (USet) | 22.5 V DC ... 29.5 V DC (> 24 V DC, constant capacity restricted) |
| Output current Imax | 3.75 A |
| Nominal output current (IN) | 1.75 A (-25 °C ... 55 °C) |
| 1.9 A (-25 °C ... 40 °C permanent) | |
| Derating | 55 °C ... 70 °C (2.5 %/K) |
| Feedback voltage resistance | ≤ 35 V DC |
| Protection against overvoltage at the output (OVP) | < 35 V DC |
| Control deviation | < 1 % (change in load, static 10 % ... 90 %) |
| < 2 % (change in load, dynamic 10 % ... 90 %) | |
| < 0.1 % (change in input voltage ±10 %) | |
| Residual ripple | < 60 mVPP(20 MHz) |
| Short-circuit-proof | yes |
| Output power | 42 W |
| Peak switching voltages nominal load | < 40 mVPP(20 MHz) |
| Maximum no-load power dissipation | < 0.7 W |
| Power loss nominal load max. | 5 W |
| Rise time | < 0.5 s (UOUT(10 % ... 90 %)) |
| Connection in parallel | yes, for redundancy and increased capacity |
| Connection in series | yes |
Connection data
| Input | |
| Connection method | Screw connection |
| Conductor cross section, rigid min. | 0.2 mm² |
| Conductor cross section, rigid max. | 2.5 mm² |
| Conductor cross section flexible min. | 0.2 mm² |
| Conductor cross section flexible max. | 2.5 mm² |
| Conductor cross section AWG min. | 24 |
| Conductor cross section AWG max. | 12 |
| Stripping length | 6.5 mm |
| Screw thread | M3 |
| Tightening torque, min | 0.5 Nm |
| Tightening torque max | 0.6 Nm |
| Output | |
| Connection method | Screw connection |
| Conductor cross section, rigid min. | 0.2 mm² |
| Conductor cross section, rigid max. | 2.5 mm² |
| Conductor cross section flexible min. | 0.2 mm² |
| Conductor cross section flexible max. | 2.5 mm² |
| Conductor cross section AWG min. | 24 |
| Conductor cross section AWG max. | 12 |
| Stripping length | 6.5 mm |
| Screw thread | M3 |
| Tightening torque, min | 0.5 Nm |
| Tightening torque max | 0.6 Nm |
Signaling
| Types of signaling | LED |
| Operating voltage display | Green LED |
| Signal output: LED status indicator | |
| Status display | "DC OK" LED green |
| Note on status display | UOUT> 21.5 V: LED lights up |
Electrical properties
| Number of phases | 1.00 |
| Insulation voltage input/output | 4 kV AC (type test) |
| 3.75 kV AC (routine test) | |
| Insulation voltage output / PE | 500 V DC (routine test) |
| Insulation voltage input/output | 3.75 kV AC (routine test) |
| 4 kV AC (type test) | |
| Insulation voltage input / PE | 3.5 kV AC (type test) |
| 2 kV AC (routine test) |
Product properties
| Product type | Power supply |
| Product family | STEP POWER |
| MTBF (IEC 61709, SN 29500) | > 1569000 h (40 °C) |
| Data management status | |
| Article revision | 05 |
| Insulation characteristics | |
| Protection class | II (in closed control cabinet) |
| Overvoltage category | III |
| Degree of pollution | 2 |
Dimensions
| Dimensional drawing | |
| Width | 54 mm |
| Height | 90 mm |
| Depth Device depth (DIN rail mounting) | 55 mm (Device depth (DIN rail mounting)) |
| Horizontal pitch | 3 Div. |
| Installation dimensions | |
| Installation distance right/left | 0 mm / 0 mm |
| Installation distance top/bottom | 30 mm / 30 mm |
Mounting
| Mounting type | DIN rail mounting |
| Assembly note | alignable: 0 mm horizontally, 30 mm vertically |
| Mounting position | horizontal DIN rail NS 35, EN 60715 |
| With protective coating | no |
Material specifications
| Housing material | Plastic |
| Housing material | Polycarbonate |
| Foot latch material | POM (Polyoxymethylene) |
Environmental and real-life conditions
| Ambient conditions | |
| Degree of protection | IP20 |
| Ambient temperature (operation) | -25 °C ... 70 °C (> 55° C derating : 2.5%/K) |
| Ambient temperature (storage/transport) | -40 °C ... 85 °C |
| Climatic class | 3K3 (in acc. with EN 60721) |
| Max. permissible relative humidity (operation) | ≤ 95 % (at 25 °C, non-condensing) |
| Shock | 18 ms, 30g, in each space direction (according to IEC 60068-2-27) |
| Vibration (operation) | < 15 Hz, amplitude ±2.5 mm (according to IEC 60068-2-6) |
| 15 Hz ... 150 Hz, 2.3g, 90 min. | |
| Temp code | T4A (70 °C) |
Standards and regulations
| Rail applications | EN 50121-4 |
| Standard – Electronic equipment for use in electrical power installations and their assembly into electrical power installations | EN 50178/VDE 0160 (PELV) |
| Standard – Limitation of mains harmonic currents | EN 61000-3-2 |
| Standard - Electrical safety | IEC 62368-1 (SELV) |
| Standard – Protection against shock currents, basic requirements for protective separation in electrical equipment | EN 50178 |
| Standard – Safety extra-low voltage | IEC 62368-1 (SELV) und EN 60204-1 (PELV) |
| Standard - Safe isolation | DIN VDE 0100-410 |
| Standard - Safety of transformers | EN 61558-2-16 |
Approvals
| CSA | CSA-C22.2 No. 107.1-01 |
| Shipbuilding approval | DNV GL (EMC B) ABS, NK |
| UL approvals | UL/C-UL listed UL 508 |
| UL/C-UL Recognized UL 60950-1 | |
| UL ANSI/ISA-12.12.01 Class I, Division 2, Groups A, B, C, D T4A (Hazardous Location) | |
| NEC Class 2 as per UL 1310 | |
| Conformity/Approvals | |
| SIL in accordance with IEC 61508 | 0 |
EMC data
| Electromagnetic compatibility | Conformance with EMC Directive 2014/30/EU |
| Low Voltage Directive | Conformance with Low Voltage Directive 2014/35/EC |
| EMC requirements for noise emission | EN 61000-6-3 |
| EN 61000-6-4 | |
| EMC requirements for noise immunity | EN 61000-6-1 |
| EN 61000-6-2 | |
| Electrostatic discharge | |
| Standards/regulations | EN 61000-4-2 |
| Electrostatic discharge | |
| Contact discharge | 6 kV (Test Level 3) |
| Discharge in air | 8 kV (Test Level 3) |
| Comments | Criterion A |
| Electromagnetic HF field | |
| Standards/regulations | EN 61000-4-3 |
| Electromagnetic HF field | |
| Frequency range | 80 MHz ... 1 GHz |
| Test field strength | 10 V/m |
| Frequency range | 1 GHz ... 2 GHz |
| Test field strength | 10 V/m |
| Frequency range | 2 GHz ... 3 GHz |
| Test field strength | 10 V/m |
| Comments | Criterion A |
| Fast transients (burst) | |
| Standards/regulations | EN 61000-4-4 |
| Fast transients (burst) | |
| Input | 4 kV (Test Level 4 - asymmetrical) |
| Output | 2 kV (Test Level 3 - asymmetrical) |
| Comments | Criterion A |
| Surge voltage load (surge) | |
| Standards/regulations | EN 61000-4-5 |
| Surge voltage load (surge) | |
| Input | 1 kV (Test Level 2 - symmetrical) |
| 2 kV (Test Level 3 - asymmetrical) | |
| Output | 0.5 kV (Test Level 1 - symmetrical) |
| 0.5 kV (Test Level 1 - asymmetrical) | |
| Comments | Criterion B |
| Conducted interference | |
| Standards/regulations | EN 61000-4-6 |
| Conducted interference | |
| Frequency range | 10 kHz ... 15 kHz |
| 10 kHz ... 15 kHz | |
| Comments | Criterion A |
| Criterion A | |
| Voltage | 3 V (Test Level 2) |
| 3 V (Test Level 2) | |
| Conducted interference | |
| Frequency range | 10 kHz ... 15 kHz |
| 10 kHz ... 15 kHz | |
| Comments | Criterion A |
| Criterion A | |
| Voltage | 3 V (Test Level 2) |
| 3 V (Test Level 2) | |
| Voltage dips | |
| Standards/regulations | EN 61000-4-11 |
| Emitted interference | |
| Standards/regulations | EN 61000-6-3 |
| Radio interference voltage in acc. with EN 55011 | EN 55011 (EN 55022) class B used in industry and residential area / EMC 1 |
| Emitted radio interference in acc. with EN 55011 | EN 55011 (EN 55022) class B used in industry and residential area / EMC 1 |