Siemens 6EP1336-3BA10 Power Supply

Siemens 6EP1336-3BA10 — Stop the Clock on Your Downtime. Ship Today.

Every minute your line is down, you’re bleeding money. A failed 24 V rail takes out your entire PLC panel — S7-1500 CPU, ET 200SP I/O, HMI, the works. The 6EP1336-3BA10 is the exact replacement you need, and we have it on the shelf right now in Xiamen. No lead time negotiation. No waiting on distributor allocation. We pull it, test it, and hand it to DHL the same day.

This is the SITOP PSU100M 10 A unit — Siemens’ workhorse mid-range supply with active PFC, SFB selective fuse-breaking technology, and a floating DC OK relay contact that your PLC can monitor directly. If you’ve been running the older 6EP1336-2BA10 (PSU100C generation), this is the drop-in successor. Same footprint, same terminals, same 24 V / 10 A / 240 W rating — just with better diagnostics and a wider thermal envelope.

URGENT REQUIREMENT? Contact: [email protected] | WhatsApp: +86 18359268345

Quick Technical Datasheet

Troubleshooting & Replacement Tips

Symptom: Panel dead, no 24 V rail, CPU not booting. Before you condemn the PSU, check the AC input fuse on the MCB feeding terminals L/N. A nuisance trip from an upstream fault is the most common false alarm. Measure AC voltage at terminals 1 and 2 first. If AC is present and the green LED on the 6EP1336-3BA10 is off, the unit has failed — replace it.

Symptom: DC OK relay open, PLC throwing power fault alarm. The DC OK contact (terminals 11/12) opens when output voltage drops below the regulation window (~22 V). This can be caused by an overloaded output rail — count your connected loads. The 10 A rating is continuous; if you’ve added I/O modules since commissioning, you may be over-drawing. Measure output current with a clamp meter before swapping the PSU.

Symptom: PSU in hiccup mode — output pulsing, LED flickering. Hiccup mode activates on sustained overload or short circuit. Disconnect all DC loads and power-cycle. If the unit recovers to steady 24 V with no load, the fault is downstream — isolate branch by branch. If it stays in hiccup with no load, the unit is damaged internally — replace immediately.

Replacement procedure (step-by-step):

1. De-energize the AC supply MCB feeding the PSU. Verify zero volts at terminals 1/2 with a CAT III multimeter.
2. Disconnect DC output wiring at terminals 4 (+24 V) and 5 (0 V). Label polarity — do not rely on wire color alone in aged panels.
3. Disconnect DC OK relay wiring at terminals 11/12 if used.
4. Release the DIN rail latch at the bottom of the unit and slide the PSU off the rail.
5. Mount the new 6EP1336-3BA10 on the rail. Torque power terminals to 0.8 N·m — under-torqued terminals are a leading cause of intermittent faults in vibrating environments.
6. Reconnect AC input (L to terminal 1, N to terminal 2, PE to terminal 3). Reconnect DC output and DC OK relay.
7. Energize AC supply. Verify green LED illuminates. Measure output voltage at terminals 4/5 — should read 24.0 V ±1% at no load. Adjust front-panel trimmer if needed.
8. Restore DC loads. Monitor output current for 5 minutes under normal operating load. Confirm DC OK relay closes (PLC power fault alarm clears).

Compatibility note — replacing 6EP1336-2BA10 (PSU100C): The 3BA10 is the direct successor. Terminal layout is identical. The 3BA10 adds SFB and active PFC not present on the 2BA10 — no configuration changes required. The DC OK relay contact pinout is the same.

Output voltage trimmer: Factory-set to 24.0 V. Accessible via front-panel potentiometer. Adjustment range 22.8–26.4 V. Do not exceed 26.4 V — overvoltage will damage connected SIMATIC I/O modules rated for 24 V ±10%.

Reliability in Harsh Conditions

The 6EP1336-3BA10 is not a commercial-grade supply dressed up in industrial packaging. It is built to Siemens’ SITOP specification, which means it has been validated against the conditions that actually kill power supplies in the field.

Vibration and shock: Qualified to IEC 60068-2-6 (sinusoidal vibration) and IEC 60068-2-27 (mechanical shock). In practice, this means it survives the resonance frequencies common in press lines, compressor rooms, and mobile equipment panels without internal solder joint fatigue or connector fretting.

Thermal cycling: The -25 °C to +70 °C operating range is not a marketing number — it reflects actual component derating curves. Electrolytic capacitors are selected for low-temperature startup; the switching topology is tuned to maintain regulation across the full thermal envelope. In outdoor enclosures in northern climates, this matters at 06:00 in January.

Humidity and condensation: Conformal coating on the PCB provides protection against humidity up to 95% non-condensing. In coastal or high-humidity plant environments — paper mills, food processing, chemical plants — this coating is the difference between a 5-year service life and a 6-month corrosion failure.

EMC immunity: Compliant with EN 61000-6-2 (industrial immunity), covering ESD, radiated RF, electrical fast transients (EFT), surge, and conducted disturbances. In drive-heavy environments where SINAMICS inverters generate significant conducted emissions on the DC bus, the PSU100M’s immunity margin keeps the 24 V rail stable.

ATEX Zone 2 certification: The unit carries ATEX II 3 G, permitting installation in Zone 2 hazardous areas when housed in a suitable enclosure. This is relevant for oil & gas, chemical, and pharmaceutical applications where explosive atmospheres may occasionally be present.

MTBF > 500,000 hours at 40 °C ambient (IEC 61709 stress model). At a typical 8,760-hour operating year, that is over 57 years of calculated mean time between failures — a figure that reflects component selection and derating discipline, not optimistic extrapolation.

Global Express Logistics

Our warehouse is located in Xiamen, Fujian — one of China’s primary export hubs with direct access to DHL, FedEx, and UPS international gateways. When you place an order before 15:00 CST, the unit ships the same business day.

Typical transit times from Xiamen:

• Southeast Asia (SG, MY, TH, VN, ID): 2–3 business days via DHL Express
• Middle East (AE, SA, QA, KW): 3–4 business days via FedEx International Priority
• Europe (DE, NL, FR, PL, IT): 3–5 business days via DHL Express Worldwide
• North America (US, CA, MX): 3–5 business days via FedEx International Priority
• Australia / New Zealand: 3–4 business days via DHL Express
• South America (BR, CL, CO): 5–7 business days via FedEx

Every shipment includes a commercial invoice with accurate HS code (8504.40 — static converters) and declared value for customs clearance. For urgent shipments requiring customs pre-clearance documentation or an End-User Certificate, contact us before ordering and we will prepare the paperwork in parallel with packing.

Tracking numbers are issued within 2 hours of dispatch and sent to your order email. For critical plant shutdowns, WhatsApp us your order number and we will provide real-time shipment updates directly.

We ship to over 80 countries. Export compliance is handled in-house — no third-party freight forwarder delays. If your destination requires an import license or specific shipping documentation, tell us at the time of order and we will accommodate.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
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