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Product Specifications

Product Description

The SITAS 4AM6442-8DD40-0FA0 is a 2000VA single-phase safety isolating transformer with an 11-tap primary spanning 208-550V, stepping down to 2x115V (230V in series, 8.70A). This is the highest-power transformer in the SITAS multi-tap range — delivering the full 4AM6442 platform performance for the largest control panels across worldwide mains voltages.

Electrical Performance

Rated at 2,000VA continuous with a short-time power rating of 9,700VA (S6 duty) — nearly 5x headroom. The EI 174/102 laminated core achieves approximately 96 percent efficiency. Eleven primary taps (208-550V) accommodate worldwide mains voltages. Full galvanic isolation via II0 vector group.

Mechanical Design

Substantial 176 × 164 × 158 mm 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

Suits large industrial control panels in facilities worldwide — including North American manufacturing plants on 480V distribution, processing facilities, and heavy-industrial sites — where 230V control power is required at the highest SITAS power rating.

Decision Parameters

Parameter Value
Rated Power 2,000 VA
Primary Voltage 11 taps: 208–550 V
Secondary Voltage 2 × 115 V (230 V series)
Secondary Current 8.70 A
Short-Time Power (S6) 9,700 VA
Efficiency ~96%
Insulation Class B (130 °C)
Protection Class IP00
Dimensions (WxHxD) 176 × 164 × 158 mm
Mounting Screw Mount
Siemens
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Siemens 4AM6442-8DD40 208-550V to 2x115V 2000VA Safety Isolating Transformer

11-tap primary 208-550V, 2x115V (230V series), 9.7kVA S6 surge
MPN/Series: 4AM6442-8DD40-0FA0

Product Specifications

Brand
Siemens
Part Number
4AM6442-8DD40-0FA0
Product Type
Control Transformer
Series
SITAS 4AM6442
Rated Power
2,000 VA
Primary Voltage
208–550 V (11-tap)
Secondary Voltage
230 V
Secondary Current
8.70 A
Short-Time Power (S6)
9,700 VA
Frequency
50/60 Hz
Mounting
Screw Mount
Siemens 4AM6442-8DD40 208-550V to 2x115V 2000VA Safety Isolating Transformer