Product Specifications
Brand: Siemens
Part Number: 4AP2142-8BC40-0HA0
Type: Three-Phase Control Transformer
Series: SITAS 4AP
Rated Power: 1000 VA (S6: 3.5 kVA)
Primary Voltage: 400 V (Y500-400 / Δ289-230)
Secondary Voltage: Y 400 V / Δ 230 V
Secondary Current: 1.44-2.50 A
Frequency: 50/60 Hz
Efficiency: 92%
Thermal Class: B (40 °C)
Protection Degree: IP00
Mounting: Screw Mount
Certifications: CE, cRUus, EN 61558-2
Product Description
The Siemens SITAS 4AP2142-8BC40-0HA0 is a 1000 VA (1 kVA) three-phase control transformer delivering 400 V to 289/230 V step-down for industrial control circuits. With 92% efficiency and 3.5 kVA short-term capacity, it reliably powers contactors, relays, and control electronics in demanding automation panels and motor control centers.
Key Features
- Low inrush current design enables fuseless protection with SIRIUS 3RV motor starter protectors, eliminating separate fusing and reducing panel wiring
- Multi-voltage primary tapping: Y500-400 / Δ289-230 for flexible integration across different supply configurations
- 50/60 Hz dual-frequency operation covers global industrial power standards
- IP00 open-type construction for enclosed panel or cabinet mounting
- Screw/tab terminals for secure, low-maintenance connections
Technical Data
| Parameter | Value |
|---|---|
| Rated Power (PN) | 1000 VA (1 kVA) |
| Short-Term Power (S6) | 3.5 kVA |
| Primary Voltage | Y500-400 / Δ289-230 V |
| Secondary Voltage | Y 400 V / Δ 230 V |
| Secondary Current | 1.44-2.50 A |
| Frequency | 50/60 Hz |
| Efficiency | 92% |
| Thermal Class | B (40 °C ambient) |
| Protection Degree | IP00 |
| Dimensions (W x D x H) | 219 x 168 x 168 mm |
| Weight | 11.3 kg |
| Standards | EN 61558-2-1, -2-2, -2-4 |
| Certifications | CE, cRUus |
Applications
This transformer is designed for supplying control circuits in industrial machinery, conveyor systems, packaging equipment, and motor control centers where reliable galvanic isolation between mains and control voltage is essential. The low inrush characteristic makes it ideal for fuseless panel designs using SIRIUS 3RV circuit breakers for primary-side protection, reducing BOM cost and panel footprint.
Resources & Documentation
Siemens SITAS 4AP2142 1000VA 3-Phase Control Transformer, 400V to 289/230V
Product Specifications
Brand: Siemens
Part Number: 4AP2142-8BC40-0HA0
Type: Three-Phase Control Transformer
Series: SITAS 4AP
Rated Power: 1000 VA (S6: 3.5 kVA)
Primary Voltage: 400 V (Y500-400 / Δ289-230)
Secondary Voltage: Y 400 V / Δ 230 V
Secondary Current: 1.44-2.50 A
Frequency: 50/60 Hz
Efficiency: 92%
Thermal Class: B (40 °C)
Protection Degree: IP00
Mounting: Screw Mount
Certifications: CE, cRUus, EN 61558-2