Phoenix Contact 2866381 Power Supply – TRIO-PS/1AC/24DC/20

The Phoenix Contact TRIO-PS/1AC/24DC/20 is a high-performance, primary-switched DIN rail power supply delivering 20 A at 24 V DC. Designed for standard industrial applications, this device offers dependable functionality, excellent power efficiency, and robust build quality for demanding automation and machine-building environments.

Ideal for worldwide deployment, it supports universal AC input voltages, features short-circuit resistance, active current limitation, and requires minimal installation space.

Technical Specifications

Model: TRIO-PS/1AC/24DC/20
Part Number: 2866381
Product Type: Power Supply Unit
Input Voltage Range: 85–264 V AC (derating below 90 V AC)
Output Voltage: 24 V DC (adjustable 22.5–29.5 V DC)
Nominal Output Current: 20 A
Power Output: 480 W
Mounting Type: DIN rail NS 35
Dimensions (W × H × D): 115 × 130 × 152.5 mm
Weight: Approx. 2.2 kg

Input Characteristics

• Voltage Type: AC (single-phase)
• Nominal Input Voltage: 100–240 V AC
• Extended Range: 85–264 V AC
• Derating: 2.5%/V below 90 V AC
• Frequency Range: 45–65 Hz
• Inrush Current: < 15 A
• Inrush Current Integral (I²t): 1.4 A²s
• Current Consumption:
  • 4.6 A (120 V AC), 2.4 A (230 V AC)
• Mains Buffering Time: > 13 ms (120 V / 230 V AC)
• Internal Input Fuse: 10 A slow-blow
• Recommended Breaker: 16 A (B/C/D/K characteristic)
• Power Factor: 0.99 (typ.)

Output Performance

• Output Voltage: 24 V DC ±1% (adjustable 22.5–29.5 V DC)
• Nominal Output Current: 20 A
• Output Characteristic: U/I characteristic
• Efficiency: 91% (at 230 V AC)
• Residual Ripple: < 10 mVpp
• Power Loss (Full Load): < 46 W
• No-Load Power Dissipation: < 4 W
• Active Current Limiting: Approx. 25 A (short-circuit protection)
• Feedback Voltage Resistance: 35 V DC
• Overvoltage Protection: < 35 V DC
• Capacitive Load: Unlimited
• Rise Time: < 2 ms (10–90%)
• Parallel Operation: Supported
• Series Connection: Supported

Signaling & Indicators

• Signaling Type: LED status indicator
• LED Display: Green “DC OK”
• Threshold: UOUT > 21.5 V = LED ON

Connection Data

Input Terminal (Screw):

• Rigid: 0.2–2.5 mm²
• Flexible: 0.2–2.5 mm²
• AWG: 24–14
• Torque: 0.4–0.5 Nm
• Stripping Length: 9 mm

Output Terminal (Screw):

• Rigid: 0.5–6 mm²
• Flexible: 0.5–4 mm²
• AWG: 20–10
• Torque: 0.5–0.6 Nm
• Stripping Length: 14 mm

Mechanical & Environmental

• Housing Material: Zinc-plated steel, aluminum sides
• Mounting Type: Horizontal DIN rail (NS 35)
• Installation Clearance: 0 mm (sides), 50 mm (top/bottom)
• Protection Class: I (PE required)
• Degree of Protection: IP20
• Ambient Temperature (Operation): –25°C to +70°C (derating >55°C)
• Storage Temperature: –40°C to +85°C
• Humidity: ≤ 95% RH (non-condensing)
• Shock Resistance: 30 g / 18 ms
• Vibration Resistance: 2.3 g (15–150 Hz), 2.5 mm amplitude (<15 Hz)

Standards & Reliability

• Insulation Voltage:
  • Input/Output: 4 kV AC (type test), 2 kV AC (routine test)
  • Output/PE: 500 V DC
  • Input/PE: 2 kV AC
• Overvoltage Category: III
• Pollution Degree: 2
• MTBF (SN 29500 @ 40°C): > 915,000 h
• Climatic Class: 3K3 (EN 60721)

Applications

Ideal For:

• Machine building and mechanical engineering
• Industrial automation requiring up to 480 W
• Control cabinet systems with high reliability requirements
• Redundant and scalable 24 V DC applications

Key Features & Benefits

✅ 20 A Output at 24 V DC: Suitable for mid- to high-power automation loads.

✅ Universal Input Range: 85–264 V AC supports global operation.

✅ High MTBF: Over 915,000 hours at 40°C ensures reliability.

✅ Slim DIN Rail Form: Compact 115 mm width saves panel space.

✅ Discontinued Model: Limited availability—ideal for replacements or legacy setups.

📦 Available from Drive Outlet Megastore

The Phoenix Contact TRIO-PS/1AC/24DC/20 delivers stable, industrial-grade 24 V DC power in a slim DIN rail form. A proven solution for machines, panels, and global deployments.

Note: This model is discontinued after January 2026. Secure stock now or contact us for alternatives.