Siemens 4AM6142-5FT10 500V to 230V 1600VA Control Transformer

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Product Specifications

Brand: Siemens
Part Number: 4AM6142-5FT10-0FA0
Product Type: Control Transformer
Series: SITAS 4AM6142
Rated Power: 1,600 VA
Primary Voltage: 500 V (taps: 475/500/525 V)
Secondary Voltage: 230 V
Secondary Current: 6.96 A
Short-Time Power (S6): 7,300 VA
Frequency: 50/60 Hz
Mounting: Screw Mount

Product Description

The SITAS 4AM6142-5FT10-0FA0 is a 1600VA single-phase control transformer stepping 500V down to 230V at 6.96A. The 5FT10 variant targets 500V distribution systems found in marine electrical service, offshore platforms, and specialized heavy-industrial plants.

Electrical Performance

Rated at 1,600VA continuous with a short-time power rating of 7,300VA (S6 duty) — over 4.5x headroom for high-inrush loads. The laminated EI core achieves approximately 96 percent efficiency. Primary taps at 475/500/525V (±5 percent) accommodate voltage swings. Full galvanic isolation via II0 vector group.

Mechanical Design

Substantial 164x176x138mm 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 28 kg.

Application

Common in marine electrical systems (500V ship service), offshore platforms, and specialized industrial plants with 500V distribution. The 230V secondary reliably powers control, monitoring, and automation subsystems at 1600VA — enough for large multi-contactor panels.

Decision Parameters

Parameter	Value
Rated Power	1,600 VA
Primary Voltage	500 V (taps: 475/500/525 V)
Secondary Voltage	230 V
Secondary Current	6.96 A
Short-Time Power (S6)	7,300 VA
Efficiency	~96%
Insulation Class	B (130 C)
Protection Class	IP00
Dimensions (WxHxD)	164 x 176 x 138 mm
Mounting	Screw Mount