Product Specifications
- Brand
- Siemens
- Part Number
- 4AM6442-5CJ10-0FA0
- Product Type
- Control Transformer
- Series
- SITAS 4AM6442
- Rated Power
- 2,000 VA
- Primary Voltage
- 440 V (taps: 418/440/462 V)
- Secondary Voltage
- 110 V
- Secondary Current
- 18.18 A
- Short-Time Power (S6)
- 9,700 VA
- Frequency
- 50/60 Hz
- Mounting
- Screw Mount
Product Description
The SITAS 4AM6442-5CJ10-0FA0 is a 2000VA single-phase control transformer converting 440V marine/offshore supply to 110V at 18.18A for high-current industrial control circuits. The highest-power 110V secondary SITAS transformer, combining the 4AM6442 platform performance with the 110V control standard common in marine and North American-influenced installations.
Electrical Performance
Rated at 2,000VA continuous with a short-time power rating of 9,700VA (S6 duty) — nearly 5x headroom for high-inrush contactor, relay, and solenoid loads. The EI 174/102 laminated core achieves approximately 96 percent efficiency. Primary taps at 418/440/462V (±5 percent). Full galvanic isolation via II0 vector group.
Mechanical Design
Substantial 158x176x164mm IP00 open-frame construction for enclosure installation with screw terminals and screw mounting. Class B (130 C) insulation system, rated for 40 C ambient. Weighs approximately 25 kg.
Application
Suited for large marine and offshore control panels where 440V ship service feeds 110V control circuits at high current — powers extensive contactor banks, relay arrays, and automation subsystems in these demanding environments.
Decision Parameters
| Parameter | Value |
|---|---|
| Rated Power | 2,000 VA |
| Primary Voltage | 440 V (taps: 418/440/462 V) |
| Secondary Voltage | 110 V |
| Secondary Current | 18.18 A |
| Short-Time Power (S6) | 9,700 VA |
| Efficiency | ~96% |
| Insulation Class | B (130 C) |
| Protection Class | IP00 |
| Dimensions (WxHxD) | 158 x 176 x 164 mm |
| Mounting | Screw Mount |
Related Products
- Siemens 4AM6442-5AT10-0FA1 — Cage-clamp variant, 8.70A at 230V, 9,700VA S6 surge
- Siemens 4AM6442-5AT10-0FA0 — 8.70A at 230V from 400V, 9,700VA S6 — highest SITAS rating
- Siemens 4AM6442-8JD40-0FA0 — Widest coverage at highest SITAS power, dual 115V secondaries
Resources & Documentation
Siemens 4AM6442-5CJ10 440V to 110V 2000VA Control Transformer
Product Specifications
- Brand
- Siemens
- Part Number
- 4AM6442-5CJ10-0FA0
- Product Type
- Control Transformer
- Series
- SITAS 4AM6442
- Rated Power
- 2,000 VA
- Primary Voltage
- 440 V (taps: 418/440/462 V)
- Secondary Voltage
- 110 V
- Secondary Current
- 18.18 A
- Short-Time Power (S6)
- 9,700 VA
- Frequency
- 50/60 Hz
- Mounting
- Screw Mount








