Siemens Sitop PSU6200 Ex Stabilized power supply, 24VDC, 20A Part number 6EP3336-7SC00-3AX0

Product Overview

The Siemens 6EP3336-7SC00-3AX0 is a switched-mode DIN-rail power supply from the SITOP PSU6200 series. It converts single-phase AC (or DC) input into a stabilized 24 V DC output at up to 20 A, supplying reliable power to control systems, PLCs, I/O modules, and automation devices — ideal for industrial, machine, and process control applications. It also features a built-in diagnostic interface and is designed for industrial reliability and voltage stability.

Key Features

• Switched-mode DIN-rail power supply (SITOP PSU6200)
• Wide-range input: 120–240 V AC (single-phase) or 110–240 V DC; supports 85–264 V AC / 85–275 V DC input range
• Output: regulated 24 V DC at up to 20 A (480 W nominal power)
• Output voltage adjustable (24–28 V) via internal potentiometer
• Low ripple and stable voltage under load — suitable for sensitive control electronics
• Diagnostic output contact (NO contact) for “DC OK” signalling — enables external alarm or monitoring circuits
• DIN-rail mountable — compact and space-efficient installation
• Supports overload, short-circuit and transient protection for safe operation
• Buffered output: in case of a brief input power interruption, output remains stable for a short hold-up time (buffering behavior)

Technical Specifications

• Article Number: 6EP3336-7SC00-3AX0
• Series: SITOP PSU6200
• Input Voltage (AC): 120–240 V AC (single-phase), 50/60 Hz
• Input Voltage (DC): 110–240 V DC (wide-range allowed)
• Permitted Input Range: AC: 85–264 V, DC: 85–275 V
• Output Voltage: 24 V DC (adjustable 24–28 V)
• Output Current: up to 20 A (continuous load)
• Output Power: 480 W nominal (derating may apply for high ambient temperatures)
• Voltage Regulation: ±3 % overall tolerance; ±0.2 % for slow input or load variations
• Ripple / Noise (max): typ. 50 mV; max. 80–100 mV peak-to-peak
• Diagnostic Output: NO-contact, 30 V DC / 0.1 A — for “DC OK / fault” signalling
• Mounting: DIN-rail mount (35 mm) — suitable for control-cabinet installation
• Protection Class / Housing: IP20 (indoor / protected cabinet use)
• Operating Ambient Temperature Range: –25 °C to +70 °C (typical range for industrial environments) :contentReference[oaicite:1]{index=1}

Compliance & Standards

• Meets Siemens industrial power-supply standards (SITOP family)
• Designed for use in automation, machine control, and process control systems requiring stable 24 V DC supply
• Includes protection against overload, short-circuit, and input-voltage fluctuations — suitable for industrial environments

Applications

The 6EP3336-7SC00-3AX0 power supply is ideal for supplying 24 V DC power to PLC racks, distributed I/O modules, sensors, actuators, HMIs, control cabinets, and other automation infrastructure. It is well-suited for industrial automation systems, machine controls, building-management panels, and any application requiring stable, powerful 24 V DC supply with diagnostic feedback. Its 20 A capacity supports medium- to high-load installations, making it a reliable backbone for complex control systems.