L.T. Switch Board SIEPAN 8 PU – IEC 61439 – 1 & 2 Edition
SIEPAN Low-Voltage Power Distribution Boards – Safe, Adaptable, and High-Performance
With a legacy of reliability, the Siemens 8PU low-voltage switchboard design has long set the standard for robust power distribution solutions in demanding industries.
Engineered for safety and certified in accordance with IEC 61439 – 1 and 2 standards, these systems offer dependable protection for both personnel and equipment. Built to perform in harsh environments—including high temperatures and dusty conditions—the 8PU switchboards are trusted across a wide range of sectors such as cement, steel, petrochemicals, pharmaceuticals, food and beverage, data centers, healthcare, hospitality, and urban transit infrastructure. Over 100,000 of these boards have been deployed, proving their reliability and consistent performance.
This trusted Siemens technology, known as SIEPAN 8PU®, is now accessible through us, delivering proven efficiency and flexibility wherever it’s needed.

Highlights:
- Conformance to Seismic withstand upto Zone V
- Conformance to Type Tested assemblies (TTA)
- Conformance to Internal Arc Containment (IAC)
- Fully compartmentalized, bolted & modular design for
- PCC & MCC
- Non-compartmentalized drive control panels
- Non-compartmentalized APFC panels
Range:
- Power control centres
- Communication capable intelligent power control centres
(IPCCs) - Withdrawable motor control centres with patented
Alstan® bus-bar technology - Energy management PCCs for Plant & Building
- Motor control centres – Fuseless and with Fuse
- Intelligent motor control centres (IMCCs)
- Integrated PMCCs for Ethernet connectivity
- Automatic power factor correction panels
- All variants available with a choice of aluminum and
copper for bus-bars - Degree of ingress protection upto IP 54 for all ratings
Customer benefits:
- Siemens innovation & technology
- Maximum reliability in protection of your plant and
equipment - Maximum safety for operating personnel
- Suited for the most arduous site conditions
- Compact and space saving
- Extensive License Partner network across the country
SIEPAN 8PU – Range & dimensions at a glance

Type Tests
- Temperature rise limits
- Di-electric properties
- Short-circuit withstand
Special Tests
- Seismic withstand (Zone III/V)
- Internal arc containment (IAC)
- Continuity of protective circuit
Routine Tests
- Inspection of wiring & operation
- Insulation verification
- Continuity & insulation resistance
Technical Data
| Conformance to standards | IS8623-1 / IEC 439 |
|---|---|
| Internal Arc Containment | IEC 61641 |
| Seismic withstand | IS 1893 |
| Short circuit withstand (Icw) – main bus | 65kA / 1sec / 143kA peak |
| Short circuit withstand (Icw) – neutral | 39kA / 1sec / 82kA peak |
| Short circuit withstand (Icw) – earth | 39kA / 1sec / 82kA peak |
| Degree of protection (IP) | IP 4X, 5X, X3, X4 |
| Ambient temperature | 40° C / 45° C / 50° C |
| Temperature rise | As per IEC 61439-2 |
| Seismic conformance test | Zone III & V |
| Rated insulation voltage | upto 1000V |
| Rated operational voltage | upto 690V |
| Rated impulse withstand | 8kV |
| Main busbar rating | upto 5000A |
| Busbar execution | Interleaved / non-Interleaved |
| Busbar options | Copper / aluminium |
| Infeed termination | Cable / bus ways / busduct |
| Infeed entry | Top / bottom |
| Cable feeder access | Front / rear* |
| ACB cubicle | Single tier |
| Form of separation | upto form 4B |
| Standard height | 2300mm |
| Standard depth | 1120mm / 560mm |
| Standard colour shade | RAL 7035 |
*ACB Compartment – Only Rear access
Ideal for Industrial Power Distribution Systems, commercial complex and malls, Manufacturing Plants, hospitals, airports, Data Centers and Server Rooms, public infrastructure etc.
Need a custom solution? Contact us for tailored Outgoing Feeder Panels!

