Sitop Modular 20 Stabilized Power Supply 6EP1336-3BA00 6EP1 336-3BA00 6EP1336-3BAOO

Siemens 6EP1336-3BA00 | SITOP Modular 24V DC / 20A / 480W Power Supply — PSU8200 / Wide-Range AC Input / Power Boost / DIN Rail

SITOP Modular — The 20A Workhorse for Demanding Panel Builds

The 6EP1336-3BA00 is Siemens' 20A SITOP Modular power supply — the industry benchmark for reliable 24V DC supply in complex machines and systems. At 480W continuous output with an 85–275V AC wide-range input, this unit accepts virtually any single-phase mains supply worldwide without jumper or switch changes. Whether the panel is connected to a 120V North American supply or a 230V European supply, the 6EP1336-3BA00 powers up correctly.

The Power Boost function is the feature that separates SITOP Modular from basic industrial power supplies. When a circuit breaker protecting a downstream 24V DC branch needs to trip, the DC power supply must push 3–10 times the breaker's rated current for a fraction of a second to drive the breaker into the magnetic (instantaneous) trip region. The 6EP1336-3BA00 provides up to 60A for 25ms — three times its 20A rated output — specifically to trip these breakers reliably. Without adequate boost current, a faulted branch draws continuous current, fails to trip the breaker, and may cause damage or fire.

Short-circuit behaviour is selectable between two modes. In constant current mode, the supply limits current to its rated value and the output voltage falls — useful for systems where the load must receive some power even during a fault. In latching shutdown mode, the supply switches off on short circuit and requires manual reset — useful for controlled fault response where the system must stop and alert the operator.

Key Specifications

Replacement Note — 6EP1336-3BA10

The 6EP1336-3BA10 is Siemens' confirmed direct replacement for the 6EP1336-3BA00. Specifications are electrically identical: same 85–275V AC input, same 24V DC/20A/480W output, same Power Boost and LED functions. The physical difference is the housing width — 90mm for the 3BA10 versus 160mm for the 3BA00. The 3BA10 occupies less DIN rail space. Confirm panel cutout and DIN rail space when retrofitting.

FAQ

Q1: What is the Power Boost function and why does it matter?

The Power Boost supplies up to 60A for 25ms — three times the rated 20A. This peak current is essential for tripping magnetic circuit breakers on the 24V DC distribution. A standard breaker's magnetic trip requires 5–10 times its rated current to trip instantaneously. Without sufficient boost current, a faulted branch may not trip its breaker, leaving the fault sustained. The 6EP1336-3BA00's Power Boost ensures reliable, fast clearing of downstream protection devices.

Q2: What is the difference between constant current and latching shutdown short-circuit behaviour?

In constant current mode, the supply limits its output current to approximately the rated value when the output is short-circuited — the output voltage collapses, the supply remains on, and the load receives a protected current. When the short is removed, the supply recovers automatically. In latching shutdown mode, the supply disconnects its output completely and latches off — it requires a manual reset (typically cycling the AC input) to restart. Select latching shutdown where a fault must stop the system and trigger an operator response.

Q3: The output voltage is adjustable — what is the purpose of adjusting above 24V DC?

The output is adjustable from 24V to 28.8V DC. Higher output voltage compensates for voltage drop in long cable runs between the power supply and distant 24V loads. If the supply is at one end of a large panel or machine and the loads are at the other end, cable resistance drops the terminal voltage at the load. Setting the supply output to 25V or 26V delivers 24V at the load's terminals despite the cable drop. Measure the terminal voltage at the most distant critical load before adjusting.

Q4: Can multiple 6EP1336-3BA00 units be connected in parallel for increased current?

Yes. The SITOP Modular range supports parallel operation with optional symmetrical load distribution. The output voltage is set identically on both units, and both supply the shared 24V DC bus. For fully automatic load sharing, Siemens' redundancy modules (e.g., SITOP redundancy module) are added to the parallel configuration for true N+1 redundancy operation.

Q5: Where is the 6EP1336-3BA00 sourced after discontinuation?

Through the established SITOP PSU aftermarket — Siemens-authorised distributors (where stock remains), specialist industrial power supply dealers, and tested surplus suppliers. For new procurement, the 6EP1336-3BA10 is the direct replacement with identical electrical performance in a narrower housing. Confirm panel space before specifying the 3BA10 as a replacement for an existing 3BA00 installation.