Phoenix Contact 2903148 TRIO-PS-2G/1AC/24DC/5 – 24 V DC, 5 A Power Supply
The Phoenix Contact 2903148 (TRIO-PS-2G/1AC/24DC/5) is a single-phase, primary-switched DIN rail power supply from the Phoenix Contact TRIO POWER range, second generation. It delivers 24 V DC at 5 A (120 W) and is designed for machine building, including harsh ambient conditions. A dynamic boost supplies 150% of the nominal current (7.5 A) for 5 seconds, so loads with high start-up current can be started reliably. It accepts both AC and DC input, and push-in connections allow fast, tool-free wiring in a housing only 35 mm wide.
What the Part Number Means
- 2903148 – Phoenix Contact order number
- TRIO-PS – TRIO POWER power supply
- 2G – Second generation
- 1AC – Single-phase AC input
- 24DC – 24 V DC output
- 5 – 5 A nominal output current
Key Features
- Dynamic boost: 7.5 A (150% of nominal current) for 5 seconds
- Wide input range: 85–264 V AC or 99–275 V DC
- Long mains buffering at 230 V AC: typically 100 ms
- Push-in connection: fast, tool-free wiring
- Very high reliability: MTBF over 3,380,000 hours at 25 °C
- Railway approved: EN 50121-4 and fire protection to EN 45545-2 (HL3)
Key Specifications (Phoenix Contact 2903148 Datasheet)
Input
- Nominal input voltage: 100–240 V AC
- Input voltage range: 85–264 V AC, 50–60 Hz
- DC input range: 99–275 V DC
- Input current: 1.9 A at 120 V AC / 1.1 A at 230 V AC
- Inrush current: ≤16 A (typical)
- Mains buffering: typ. 20 ms at 120 V AC / typ. 100 ms at 230 V AC
- Internal input fuse: 6.3 A
- Recommended circuit breaker: 6–16 A (characteristic B, C, D or K)
Output
- Nominal output voltage: 24 V DC ±1%
- Setting range: 24–28 V DC
- Nominal output current: 5 A
- Dynamic boost: 7.5 A for 5 s
- Output power: 120 W (180 W for 5 s)
- Efficiency: >90% (at 230 V AC and nominal load)
- Residual ripple: <50 mVpp
- Overvoltage protection: ≤30 V DC
- No-load power consumption: <1 W
- Parallel connection for redundancy or higher capacity, and series connection, both possible
Signalling
- DC OK LED (green)
- Floating DC OK signal contact: 30 V AC/DC, 100 mA
General Data
- Connection: push-in; input and output 0.2–4 mm² rigid / 0.2–2.5 mm² flexible (AWG 24–12)
- Mounting: DIN rail NS 35, horizontal; 0 mm clearance left and right, 50 mm top and bottom
- Degree of protection: IP20
- Protection class: II (in closed control cabinet)
- MTBF (IEC 61709, SN 29500): >3,380,000 h at 25 °C / >1,970,000 h at 40 °C
- Ambient temperature (operation): -25 °C to +70 °C, derating 2.5%/K above +60 °C
- Start-up: type-tested at -40 °C
- Storage temperature: -40 °C to +85 °C
- Installation altitude: up to 5000 m (derating above 2000 m)
- Dimensions (W × H × D): 35 × 130 × 115 mm
- Weight: approx. 440 g
Approvals
- UL Listed / cUL Listed (UL 508)
- UL/cUL Recognized (UL 60950-1)
- Class I, Division 2, Groups A–D (hazardous locations)
- IECEE CB Scheme, EAC, BIS
- DNV (marine)
- EN 50121-4 and EN 45545-2 HL3 (railway applications)
Typical Applications
- 24 V DC supply in machine building
- Small control panels, PLCs, sensors and valve groups
- Railway, marine and harsh-environment installations
- Direct replacement of 2903148 units in existing panels
Buy the Phoenix Contact 2903148 from Atlantech Drives
Atlantech Drives supplies the Phoenix Contact 2903148 TRIO-PS-2G/1AC/24DC/5 with fast worldwide shipping and a 12-month warranty. Our experienced sales team can also quote other TRIO POWER and QUINT power supplies, and QUINT UPS modules. Request a quote today for price and availability.
