Phoenix Contact Quint-PS-1AC/24DC/20 Primary-Switched Power Supply Unit

The Phoenix Contact QUINT-PS-1AC/24DC/20 is a primary-switched DIN rail power supply delivering stable 24 V DC at 20 A nominal output. Built for industrial control systems and distributed automation, this unit combines wide input acceptance (85–264 V AC or 90–350 V DC) with active output regulation and load-adaptive current management. SFB (Selective Fuse Breaking) technology handles transient faults at 120 A within 12 ms, while POWER BOOST extends temporary current delivery to 26 A for high-inrush loads. Preventive function monitoring via LED and relay outputs flags degraded operating states before failure occurs. Total power output reaches 480 W with efficiency exceeding 93% at 230 V AC nominal.

– Technical Specifications

Input & Output
• Input: 85–264 V AC (single-phase, 45–65 Hz) or 90–350 V DC
• Output: 24 V DC ±1% (adjustable 18–29.5 V DC)
• Nominal output current: 20 A (-25 to +60 °C)
• POWER BOOST current: 26 A permanent (-25 to +40 °C)
• SFB rating: 120 A at 12 ms
• Total power: 480 W
• Efficiency: >93% (230 V AC, nominal load)
• Mains buffering: >32 ms (120–230 V AC)
• Inrush current: <20 A; I²t <3.2 A²s
• Output overvoltage protection: <35 V DC

Regulation & Noise
• Load-change regulation: <1% (static 10–90%), <2% (dynamic 10–90%)
• Input voltage deviation: <0.1% (±10% variance)
• Residual ripple: <30 mVPP at nominal values

Protection & Efficiency
• Internal fuse: 12 A slow-blow
• Permissible backup fuse: 10–16 A (B, C, D, K characteristics)
• Power loss (no-load): 8 W max; (nominal): 40 W max
• Discharge to PE: <3.5 mA

– Key Features

• DIN rail mounting (NS 35, EN 60715) with screw terminals
• Dual-input capability: AC or DC sourcing
• Active function diagnostics (LED + relay signaling)
• Wide ambient operating range: -25 to +70 °C (derating 2.5%/K above 60 °C); cold start at -40 °C
• IP20 sealed metal enclosure
• Compact form factor: 90 × 130 × 125 mm (standard); 1.7 kg

– Typical Applications

Process control modules, distributed I/O terminals, safety controllers, and fieldbus gateways in chemical processing, food packaging, and discrete manufacturing environments.

– Compatibility & Integration

Screw-terminal connections support standard M20 cable entries. LED and relay outputs integrate with supervisory monitoring systems and emergency shutdown circuits. Adjustable output voltage accommodates legacy 20–28 V DC loads.