Contactor,circuit breaker,solar inverter,electric meter,solar batteries
Siemens 6EP1437-2BA10 SITOP POWER 40 Three-Phase Industrial Power Supply
- Model Code Breakdown
6EP1437-2BA10
6EP: Standard industrial power supply series of SITOP
1437: High-power three-phase AC model, 40A output platform
2: Basic standard version (without redundant diagnostic interface)
BA: DIN rail mounting, 24VDC output
10: 3-phase 400–500V input, 40A / 960W output specification
- Core Electrical Parameters
Input Side (3-Phase Industrial Grid)
Input format: 3×400～500V AC, 3-phase 5-wire L1/L2/L3/PE
Frequency: 50/60Hz
Voltage dip tolerance: Minimum 340V for 2 seconds without output collapse
Wire gauge for input terminals: 0.5～4mm² solid/stranded copper wire
Output Side (Standard Industrial 24VDC)
Rated output: 24VDC / 40A, total power 960W
Adjustable output voltage range: 22.8～26.4V (tweaked via potentiometer at bottom)
Ripple & noise: Ripple ＜150mVpp, peak noise ＜240mVpp
Output terminals: Dual groups of +/terminals for parallel connection; wire gauge 0.5～10mm²
Parallel expansion: Two identical units can be directly paralleled for max. 80A output
Protection Functions (Full-condition Protection)
- Short-circuit protection: Automatic hiccup current limiting, auto-recovery after fault clearance
- Overvoltage Protection (OVP): Output cut-off when voltage ＞27V
- Overload Protection (OLP): Current limiting at 120% rated current
- Over-temperature Protection (OTP): Shutdown on overheat, auto-restart after cooling down
- Protection against input phase loss, surge and industrial EMC interference
III. Mechanical & Environmental Specifications
Mounting: Vertical installation on standard 35mm DIN rail
Overall dimensions (W × H × D): 160 × 125 × 121 mm
Net weight: Approx. 2.0 kg
Protection class: IP20 (for cabinet installation only)
Operating temperature: 0～+55°C (full power derating required above 55°C)
Storage / transport temperature: -25℃～+85℃
Humidity: 5%～95%RH, no condensation
Certifications: CE, UL, GL marine certification; compliant with EN61010, EN61000 industrial EMC standards
- Comparison Table of Same-Series 3-Phase Power Supplies
| Order No. | Input | 24V Output | Power | Positioning |
| 6EP1436-2BA10 | 3AC 400–500V | 20A | 480W | Medium-capacity 3-phase power supply |
| 6EP1437-2BA10 | 3AC 400–500V | 40A | 960W | High-power standard 3-phase power supply |
| 6EP1437-3BA00 | 3AC 400–500V | 40A | 960W | Equipped with relay signal output (fault contacts 13/14) |
- Terminal Definition
- Input terminals: L1, L2, L3, PE (3 phases + protective earth)
- Output terminals: Dual sets of +24V, 0V (parallel for current sharing)
- Voltage trimming potentiometer: Located at bottom; adjust with flat screwdriver
- Indicator light: Solid green = normal output; off / flashing = fault (phase loss, short circuit, overheating)
- Typical Application Scenarios
- Large PLC control cabinets (S7-1500/400, full-station power supply for ET200SP distributed I/O)
- Multi-axis servo systems, inverter control stations, robot workstations
- Packaging, logistics sorting, automotive welding & assembly production lines
- Water treatment, wind power, metallurgy, cement and other high-power industrial control equipment
- Centralized 24V power supply scenarios requiring 3-phase industrial incoming power and high current loads
VII. Replacement & Capacity Expansion Solutions
- Upgraded same-spec model: 6EP1437-3BA00 (with fault relay contacts for PLC diagnostic connection)
- Capacity expansion: Parallel two 6EP1437-2BA10 units for max. 80A / 1920W output
- Downsized alternative: 6EP1436-2BA10 (20A / 480W) for half-load applications
VIII. Installation Prohibitions & Troubleshooting Guide
Forbidden Operations (Critical Restrictions)
- Horizontal or upside-down mounting is strictly prohibited; blocked cooling air duct triggers rapid over-temperature protection
- Long-term power-on with direct output short circuit will cause continuous hiccup power derating
- Long-term operation with missing input phase accelerates aging of internal power components
- Do not install alongside high-power inverters without partition plates to avoid EMC interference
Common Fault Matrix
| Phenomenon | Root Cause | Countermeasures |
| Green light off, no 24V output | 3-phase power loss, circuit breaker tripped, internal overheating | Check 3-phase incoming voltage; power off and cool down then restart; clean dust in air duct |
| Green light flashing, output voltage drop | Output overload / short circuit | Disconnect loads and locate short circuit by segmentation; limit total load within 40A |
| Output voltage below 23V under load | Undersized cables causing excessive voltage drop | Thicken 24V main cables; add auxiliary power supplies nearby |
| Frequent over-temperature shutdown | Ambient temp ＞55℃, clogged air duct, fully enclosed cabinet | Install cabinet cooling fan, lower ambient temperature, reserve ≥50mm top & bottom ventilation clearance |
Official Overall Dimensions of Siemens 6EP1437-2BA10 (SITOP POWER 40 3-Phase 40A Power Supply)
- Overall Unit Dimensions (W × H × D, unit: mm)
160 × 125 × 121 mm
Width (horizontal along DIN rail): 160 mm
Height (vertical cooling air flow direction): 125 mm
Depth (cabinet depth direction): 121 mm
Net weight: Approx. 2.0 kg
- Dimension Differentiation of Confusable Same-Series Models (Avoid Errors in Procurement & Cabinet Layout)
| Order No. | Specification | W × H × D (mm) | Weight |
| 6EP1436-2BA10 | 3-phase 20A | 90 × 125 × 120 | 1.6 kg |
| 6EP1437-2BA10 | 3-phase 40A (without fault contacts) | 160 × 125 × 121 | 2.0 kg |
| 6EP1437-3BA00 | 3-phase 40A (with fault relay) | 160 × 125 × 121 | 2.0 kg |
| 6EP1437-2BA20 (New PSU300S Series) | New generation 40A | 145 × 145 × 150 | 3.1 kg |
- Cabinet Installation Clearance Requirements
- Mounting rail: Standard 35mm TH35 DIN rail, vertical installation (terminals downward)
- Top & bottom ventilation clearance: Reserve at least 40mm for heat dissipation; derating mandatory if ambient temp exceeds 55℃
- Side-by-side mounting: Units of same model can be tightly arranged without extra spacing
Supplementary Note
Dimensions such as 250×180×92 and 145×145×150 shown on some foreign websites belong to the new PSU300S model 6EP1437-2BA20, which is incompatible with the legacy 6EP1437-2BA10. Cabinet cutout and DIN rail layout cannot be shared between them.
