Siemens 4AM6442-8DD40 525/500/480V to 230V 2000VA Control Transformer

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Product Specifications

Brand: Siemens

Part Number: 4AM6442-8DD40-0FA0

Product Type: Control Transformer

Series: SITAS 4AM6442

Rated Power: 2,000 VA

Primary Voltage: 525/500/480 V (3-tap)

Secondary Voltage: 230 V

Secondary Current: 8.70 A

Short-Time Power (S6): 9,700 VA

Frequency: 50/60 Hz

Mounting: Screw Mount

Product Description

The SITAS 4AM6442-8DD40-0FA0 is a 2000VA single-phase control transformer with a three-tap primary spanning 525/500/480V, stepping down to 230V at 8.70A. This is the highest-power transformer available with the 480-525V multi-tap primary configuration — delivering the full 4AM6442 platform performance for the largest control panels in this voltage range.

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. Three primary taps accommodate regional voltage variations. 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

Suits large industrial control panels in facilities with 480-525V distribution — North American manufacturing plants, 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	525 / 500 / 480 V (3 taps)
Secondary Voltage	230 V
Secondary Current	8.70 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