Custom-built Low Voltage (LT) Panels ranging from 1000A to 6300A
At Rohr Eckhardt Private Limited, we specialize in the design and manufacturing of custom-built Low Voltage (LT) Panels ranging from 1000A to 6300A, engineered to meet the most demanding industrial and utility applications. With a commitment to quality and innovation, our LT Panels offer unmatched safety, flexibility, and performance under varying environmental and load conditions.
Key Features of Low Voltage Panels
✔️ Fully compartmentalized design for enhanced safety and operational clarity
✔️ Easy to install, operate, and maintain — ideal for quick commissioning
✔️ Cost-effective & space-saving architecture
✔️ High degree of safety and operational reliability
✔️ Tailored configurations to meet client-specific requirements
✔️ Aesthetic and compact design suited for modern infrastructure
✔️ Designed to comply with temperature rise limits and stringent quality standards
🔒 Safety-Focused Design
• Completely enclosed busbar chambers to prevent accidental contact
• Shrouded links in feeder compartments for maximum operator protection
• Dust and vermin-proof construction ensures longevity in all environments
• Busbar systems built to withstand high fault levels
⚙️ Robust Applications
• Industrial complexes
• Power generation & distribution setups
• Commercial buildings
• Utility substations
• Renewable energy installations
• Infrastructure projects
🛠️ Built to Last
• High ambient temperature & humidity tolerance
• Rugged indoor and outdoor applications
• Fixed or draw-out type up to 6300 Amps
• Single or double front access options
• Resistance to short circuits and thermal stress
💡 Why Choose Röhr Eckhärdt LT Panels?
With a legacy rooted in precision and reliability, Rohr Eckhardt Private Limited delivers LT Panels that blend cutting-edge engineering with global quality benchmarks. Designed for low energy consumption and long-term performance, our panels offer you cost-efficiency without compromising on safety or functionality.
Low Voltage (LT) Panel Specifications
1000A - Click to expand ↓
| Category | Specification |
|---|---|
| Electrical | 415V AC, 3P+N+E, 50Hz |
| Rated Current | 1000A |
| Short Circuit | 50kA/1sec |
| Busbar | 2×50×10mm (Copper, tin-plated) |
| Main Breaker | 1000A ACB (Micrologic trip) |
| Feeder Breakers | MCCBs (250-800A) |
| Metering | Digital energy meter, ammeter, voltmeter |
| Enclosure | CRCA 2mm, IP42 |
| Cooling | Natural ventilation |
| Cable Entry | Bottom/top, gland plate |
| Surge Protection | 40kA SPD |
| Interlocking | Mechanical |
| Testing | IEC 61439 compliant |
2000A - Click to expand ↓
| Category | Specification |
|---|---|
| Electrical | 415V AC, 3P+N+E, 50Hz |
| Rated Current | 2000A |
| Short Circuit | 50kA/1sec |
| Busbar | 2×100×10mm (Copper, tin-plated) |
| Main Breaker | 2000A ACB (Micrologic trip) |
| Feeder Breakers | MCCBs (250-1600A) |
| Metering | Digital energy meter, ammeter, voltmeter |
| Enclosure | CRCA 2mm, IP42 |
| Cooling | Natural ventilation |
| Cable Entry | Bottom/top, gland plate |
| Surge Protection | 40kA SPD |
| Interlocking | Mechanical |
| Testing | IEC 61439 compliant |
4000A - Click to expand ↓
| Category | Specification |
|---|---|
| Electrical | 415V AC, 3P+N+E, 50Hz |
| Rated Current | 4000A |
| Short Circuit | 65kA/1sec |
| Busbar | 4×100×10mm (Copper, tin-plated) |
| Main Breaker | 4000A ACB (Micrologic trip) |
| Feeder Breakers | MCCBs (250-1600A) |
| Metering | Digital energy meter, ammeter, voltmeter |
| Enclosure | CRCA 2.5mm, IP42/IP55 |
| Cooling | Forced fans (optional) |
| Cable Entry | Bottom/top, gland plate |
| Surge Protection | 40kA SPD |
| Interlocking | Mechanical/Electrical |
| Testing | IEC 61439 compliant |
5000A Click to expand ↓
| Category | Specification |
|---|---|
| Electrical | 415V AC, 3P+N+E, 50Hz |
| Rated Current | 5000A |
| Short Circuit | 65kA/1sec |
| Busbar | 4×125×10mm (Copper, tin-plated) |
| Main Breaker | 5000A ACB (Micrologic trip) |
| Feeder Breakers | MCCBs (250-1600A) |
| Metering | Digital energy meter, ammeter, voltmeter |
| Enclosure | CRCA 2.5mm, IP42/IP55 |
| Cooling | Forced fans (optional) |
| Cable Entry | Bottom/top, gland plate |
| Surge Protection | 40kA SPD |
| Interlocking | Mechanical/Electrical |
| Testing | IEC 61439 compliant |
6000A Click to expand ↓
| Category | Specification |
|---|---|
| Electrical | 415V AC, 3P+N+E, 50Hz |
| Rated Current | 6000A |
| Short Circuit | 65kA/1sec |
| Busbar | 4×150×10mm (Copper, tin-plated) |
| Main Breaker | 6000A ACB (Micrologic trip) |
| Feeder Breakers | MCCBs (250-1600A) |
| Metering | Digital energy meter, ammeter, voltmeter |
| Enclosure | CRCA 3mm, IP55 |
| Cooling | Forced fans (mandatory) |
| Cable Entry | Bottom/top, gland plate |
| Surge Protection | 65kA SPD |
| Interlocking | Electrical (auto-transfer) |
| Testing | IEC 61439 compliant |
6300A Click to expand ↓
| Category | Specification |
|---|---|
| Electrical | 415V AC, 3P+N+E, 50Hz |
| Rated Current | 6300A |
| Short Circuit | 65kA/1sec |
| Busbar | 4×150×12mm (Copper, tin-plated) |
| Main Breaker | 6300A ACB (Micrologic trip) |
| Feeder Breakers | MCCBs (250-1600A) |
| Metering | Digital energy meter, ammeter, voltmeter |
| Enclosure | CRCA 3mm, IP55 |
| Cooling | Forced fans (mandatory) |
| Cable Entry | Bottom/top, gland plate |
| Surge Protection | 65kA SPD |
| Interlocking | Electrical (auto-transfer) |
| Testing | IEC 61439 compliant |
Key Differences Summary
| Feature | Details |
|---|---|
| Busbar Size | 2×50×10mm (1000A) → 4×150×12mm (6300A) |
| Cooling | Natural (≤4000A) → Forced Fans (4000A+ optional, 6000A+ mandatory) |
| Protection |
40kA SPD (≤5000A) → 65kA SPD (≥6000A) Mechanical → Electrical interlocking (6000A+) |
| Enclosure Thickness | 2mm (1000A) → 3mm (6000A+) |
Typical Applications
| Current Rating | Applications |
|---|---|
| 1000A – 2000A | Small factories, commercial complexes |
| 4000A – 5000A | Medium industries, hospitals |
| 6000A – 6300A | Heavy industries, power substations |
LT Panel Detailed Specifications
1000A to 6300A Panels (Siemens/SEIPAN)
1000A LT Panel (Siemens/SEIPAN)
| Parameter | Specification | Additional Details |
|---|---|---|
| Busbar System | 2×50×10mm Cu, tin-plated | Calculation: 1000A ÷ 1.2A/mm² = 833mm² → 2×50×10=1000mm² (20% margin) |
| Main Breaker (Siemens) | 3WL1 1000A ACB with Micrologic 5.0X trip unit | Selection Criteria: 1000A continuous, 50kA Icu, 4-pole |
| Cable Entry | Bottom entry with 16×32mm gland plate | Option: Top entry available (specify in order) |
| Interlocking | Mechanical interlock between incomer & bus coupler | Siemens Part: 3TK2824-0CB4 mechanical interlock kit |
| Surge Protection | Siemens 5SD7 511-6 (40kA, 3P+N) | Installation: Directly mounted on busbar |
| CT/PT | 1000/5A CT (Class 0.5 for metering, 5P10 for protection) | SEIPAN Model: SCT-1000/5 |
2000A LT Panel (Siemens/SEIPAN)
| Parameter | Specification | Additional Details |
|---|---|---|
| Busbar System | 2×100×10mm Cu, tin-plated | Calculation: 2000A ÷ 1.2A/mm² = 1666mm² → 2×100×10=2000mm² (20% margin) |
| Main Breaker (Siemens) | 3WL1 2000A ACB with Micrologic 6.0X trip unit | Selection Criteria: 2000A continuous, 65kA Icu, 4-pole |
| Cable Entry | Dual-side entry with 20×40mm gland plate | SEIPAN Option: Customizable entry positions |
| Interlocking | Mechanical interlock + key exchange system | Siemens Part: 3TK2844-0CB4 with key interlock |
| Surge Protection | Siemens 5SD7 611-6 (40kA, 3P+N) with remote alarm contact | Coordination: Type 1+2 combined SPD |
| CT/PT | 2000/5A CT (Class 0.2 for energy metering) | SEIPAN Model: SCT-2000/5 with DIN96mm mounting |
4000A LT Panel (Siemens/SEIPAN)
| Parameter | Specification | Additional Details |
|---|---|---|
| Busbar System | 4×100×10mm Cu, tin-plated | Calculation: 4000A ÷ 1.2A/mm² = 3333mm² → 4×100×10=4000mm² (20% margin) |
| Main Breaker (Siemens) | 3WL2 4000A ACB with Micrologic 7.0X trip unit | Selection Criteria: 4000A continuous, 100kA Icu, 4-pole with ground fault protection |
| Cable Entry | Top+bottom entry with 25×50mm gland plate | SEIPAN Feature: Anti-dust brush seals for IP55 compliance |
| Interlocking | Electrical interlock (Siemens SIRIUS 3SU1 relays) | Logic: Incomer-Coupler interlock via PLC control |
| Surge Protection | SEIPAN SPD-4000 (40kA, 3P+N) with thermal disconnect | Installation: Dedicated SPD compartment near incomer |
| Cooling System | 2×120mm axial fans (Siemens 3UF7 310-0AA) | Control: Auto ON at 50°C, OFF at 40°C |
5000A LT Panel (Siemens/SEIPAN)
| Parameter | Specification | Additional Details |
|---|---|---|
| Busbar System | 4×125×10mm Cu, tin-plated | Calculation: 5000A ÷ 1.2A/mm² = 4166mm² → 4×125×10=5000mm² (20% margin) |
| Main Breaker (Siemens) | 3WL2 5000A ACB with Micrologic 7.0X trip unit | Selection Criteria: 5000A continuous, 100kA Icu, 4-pole with advanced metering |
| Cable Entry | Front+rear entry with cable cradle support | SEIPAN Option: Fireproof sealing compound for critical applications |
| Interlocking | PLC-based interlock (Siemens S7-1200) with HMI display | Function: Auto-transfer logic with priority selection |
| Surge Protection | Siemens 5SD7 711-6 (65kA, 3P+N) with MODBUS monitoring | Coordination: 2-stage SPD (Type 1 + Type 2) |
| Busbar Joints | Silver-plated bolted joints with torque markings (45Nm) | SEIPAN Standard: Infrared thermography tested during FAT |
6000A LT Panel (Siemens/SEIPAN)
| Parameter | Specification | Additional Details |
|---|---|---|
| Busbar System | 4×150×10mm Cu, tin-plated | Calculation: 6000A ÷ 1.1A/mm² = 5454mm² → 4×150×10=6000mm² (10% margin) |
| Main Breaker (Siemens) | 3WL3 6000A ACB with Micrologic 7.0X trip unit | Selection Criteria: 6000A continuous, 150kA Icu, 4-pole with arc flash detection |
| Cable Entry | Bottom entry with 30×60mm gland plate + cable bend radius guides | SEIPAN Feature: Integrated cable support brackets for 800mm² cables |
| Interlocking | Redundant PLC interlock (Siemens S7-1500) with SCADA integration | Logic: Dual-redundant interlock circuits |
| Surge Protection | SEIPAN SPD-6000 (80kA, 3P+N) with RS485 communication | Monitoring: Real-time SPD status via MODBUS RTU |
| Forced Cooling | 4×150mm centrifugal fans (Siemens 3UF7 410-0AA) with dust filters | Control: VFD-driven speed control based on temperature |
6300A LT Panel (Siemens/SEIPAN)
| Parameter | Specification | Additional Details |
|---|---|---|
| Busbar System | 4×150×12mm Cu, tin-plated | Calculation: 6300A ÷ 1.0A/mm² = 6300mm² → 4×150×12=7200mm² (14% margin) |
| Main Breaker (Siemens) | 3WL3 6300A ACB with Micrologic 7.0X trip unit | Selection Criteria: 6300A continuous, 150kA Icu, 4-pole with IEC 62606 compliance |
| Cable Entry | Customizable entry ports with 35×70mm gland plates | SEIPAN Option: Liquid-tight cable entry systems for outdoor installations |
| Interlocking | SIL-3 certified interlock (Siemens Fail-Safe PLC) | Safety: Meets IEC 62061 safety requirements |
| Surge Protection | Siemens 5SD7 811-6 (100kA, 3P+N) with cloud connectivity | Integration: Siemens MindSphere compatible |
| Special Tests | Partial discharge test (<10pC) + thermographic scan during FAT | SEIPAN Protocol: Witness testing available for customer |
1. Busbar Calculation Formula
| Formula | Current Density |
|---|---|
| Busbar Size (mm²) = Rated Current (A) / Current Density (A/mm²) |
1.2 A/mm² (≤4000A) 1.1 A/mm² (5000A–6000A) 1.0 A/mm² (6300A) |
2. Breaker Selection Criteria
| Criteria | Details |
|---|---|
| Continuous Current | ≥ Panel Rating |
| Icu | ≥ Short-circuit rating (50kA/65kA) |
| Trip Unit | Micrologic X (Siemens) |
| Configuration | 4-pole for complete isolation |
3. Cable Entry Best Practices
| Practice | Specification |
|---|---|
| Minimum Bend Radius | 12× Cable Diameter |
| Gland Plate Material | Stainless Steel (SEIPAN), Aluminum (Siemens) |
| Sealing | Fireproof sealing for critical areas |
4. Interlocking Types
| Type | Mechanical | Electrical | PLC-Based |
|---|---|---|---|
| Cost | Low | Medium | High |
| Flexibility | Limited | Moderate | High (programmable) |
| Vendor Part | Siemens 3TK28 series | Siemens 3SU1 relays | Siemens S7-1200/1500 PLC |
Vendor-Specific Recommendations
| Vendor | Recommendations |
|---|---|
| Siemens |
Preferred for 6000A+ panels (3WL3 series with advanced protection) Seamless integration with TIA Portal for PLC interlocks |
| SEIPAN |
Cost-effective for ≤4000A panels Customizable busbar layouts and cable entry options |
Typical Bill of Materials (6300A Example)
| Component | Siemens Model | SEIPAN Equivalent |
|---|---|---|
| Main ACB | 3WL3 6300A | SEI-ACB6300 |
| Surge Protector | 5SD7 811-6 | SPD-6300-CLOUD |
| CTs | 5A7 1860-6AA | SCT-6300/5-HD |
| Cooling Fans | 3UF7 410-0AA | SEI-FAN150-4P |
Contact us today to configure a panel tailored to your operational needs.