SIEMENS 6EP1436-3BA00 Product Description

Overview

SIEMENS 6EP1436-3BA00 is a SITOP modular three-phase stabilized switched-mode power supply, providing 24 V DC at 20 A for industrial PLC, sensor, actuator and control-panel DC loads. The supply is designed for connection to a three-phase AC line and delivers an isolated, short-circuit-proof DC output on a DIN rail mounting base. It is used in cabinet-mounted automation, process and machinery installations where a reliable 24 V control supply is required, and traded as a replacement SITOP power spare in existing Siemens control systems.

Features

SIEMENS 6EP1436-3BA00 accepts a three-phase AC rated input of 400 to 500 V, 50 to 60 Hz, with an AC voltage range of 320 to 550 V and startup from input voltage above 340 V. Rated input current is 1.1 A at 400 V and 0.9 A at 500 V. Maximum switch-on current limiting is 35 A at +25 degrees Celsius. Required line-side protection is a 3-pole coupled miniature circuit breaker, characteristic C, 6 to 16 A, or an equivalent motor protection breaker such as the referenced Siemens breaker ratings.

The output is a controlled, isolated DC voltage with rated 24 V DC and 20 A rated current. Output voltage is adjustable from 24 to 28.8 V through the front potentiometer. Total static tolerance is ±3 percent, static load regulation is approximately 0.2 percent, residual ripple peak-to-peak is maximum 100 mV, and switching spikes peak-to-peak are maximum 200 mV over a 20 MHz bandwidth. Supplied active power is typically 480 W, efficiency is approximately 90 percent at rated output voltage and current, and power loss is approximately 53 W.

The power supply provides output overvoltage protection below 35 V, typical current limitation 23 A, short-circuit-proof output, constant-current characteristic around 23 A or latching shutdown, and overload or shutdown indication through yellow and red LEDs. Galvanic isolation separates primary and secondary sides; the output is safety extra-low voltage according to the listed standards. Protection class is I, leakage current maximum 3.5 mA, and enclosure protection is IP20. Dimensions are enclosure width 160 mm, height 125 mm, and depth approximately 120.5 mm per the compact operating instructions. The unit snaps onto EN 60715 35 x 7.5 / 15 DIN rail.

Specs

Brand: SIEMENSProduct family: SITOP modularModel: 6EP1436-3BA00Product type: Three-phase stabilized switched-mode DC power supply Input type: Three-phase AC Rated input voltage: 400 to 500 V ACInput voltage range: 320 to 550 V ACStartup threshold: Above 340 VLine frequency: 50 to 60 Hz, rated range 47 to 63 HzRated input current: 1.1 A at 400 V; 0.9 A at 500 VMaximum switch-on current: 35 A at +25 degrees CelsiusLine protection required: 3-pole coupled MCB, characteristic C, 6 to 16 A, or equivalent breaker Output voltage: 24 V DCOutput adjustment range: 24 to 28.8 V DCRated output current: 20 ATypical active output power: 480 WStatic output tolerance: ±3 percentStatic load regulation: Approximately 0.2 percentResidual ripple: Maximum 100 mV peak-to-peakSwitching spikes: Maximum 200 mV peak-to-peak, 20 MHz bandwidth Efficiency: Approximately 90 percent at rated output Power loss: Approximately 53 WPower boost: 60 A for 25 ms in operation Output overvoltage protection: Below 35 VCurrent limitation: Typical 23 AOutput protection: Short-circuit-proof; constant-current characteristic or latching shutdown Status indication: LEDs for 24 V OK, overload and shutdown Isolation: Primary to secondary galvanic isolation; isolated DC output Protection class: Class IMaximum leakage current: 3.5 mADegree of protection: IP20Operating temperature: 0 to 70 degrees Celsius; derating from 60 degrees CelsiusOperating humidity: 5 to 95 percent, non-condensing Installation: EN 60715 DIN rail, 35 x 7.5 / 15Dimensions: Width 160 mm, height 125 mm, depth approximately 120.5 mmEMC: EN 55022 Class B, EN 61000-3-2, EN 61000-6-2Safety: UL 508 listed, File E197259, CSA C22.2 No. 14 and No. 107.1 references; CE marked Product status: Siemens SITOP modular replacement power supply for existing industrial DC control installations

Principle

SIEMENS 6EP1436-3BA00 operates as a primary switched-mode three-phase power supply. The input stage rectifies and filters the three-phase AC supply, and the high-frequency converter stage converts this energy into a regulated isolated 24 V DC output. Output feedback adjusts converter operation to maintain stable DC voltage despite changes in mains voltage and load current. The isolated secondary output supplies PLCs, relays, contactors, sensors, actuators, valve coils, communication modules and other 24 V DC control devices without a direct mains connection to the load side.

Current limiting and short-circuit protection protect the supply and connected DC equipment during overload, fault or wiring short conditions. The overload and shutdown LEDs indicate normal operation, overload or latching shutdown for cabinet diagnostics. Front potentiometer adjustment allows a modest output voltage rise for longer cable compensation, subject to derating guidance above 24 V. Replacement should verify the original three-phase input wiring, PE connection, output voltage setting, current requirement, DIN-rail mounting and line-side protection before installation.

Applications

SIEMENS 6EP1436-3BA00 is used in industrial automation panels, PLC cabinets, motor control centers, process control systems, production lines, packaging machines, conveyors, material handling, pumps and fans, compressors, machine tools, textile machines, food and beverage equipment, water and wastewater, chemical and process plants, utilities, building automation and general 24 V DC control circuits requiring a three-phase SITOP supply. In existing SITOP modular installations, the unit serves as a direct replacement DIN-rail power spare matched to the original cabinet mounting, input supply, output current and DC load arrangement.