4AM3242-4TT10-0FA0 63VA 1:1 Isolation Transformer 230V, Siemens

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Product Specifications

Brand: Siemens
Part Number: 4AM3242-4TT10-0FA0
Type: Isolation Transformer
Series: SITAS
Rated Power: 63 VA (S6: 190 VA)
Primary Voltage: 230 V AC (taps: 218/230/242 V)
Secondary Voltage: 230 V AC
Secondary Current: 0.27 A

Product Description

The Siemens 4AM3242-4TT10-0FA0 is a 63 VA SITAS 1:1 isolation transformer providing galvanic separation between two 230 V AC circuits without voltage conversion, rated for 190 VA S6 short-time duty to handle momentary overloads in industrial auxiliary circuits.

Design and Protection

1:1 voltage ratio — both primary and secondary rated at 230 V AC for floating circuit creation
230 V primary with three taps (218/230/242 V) for ±5% adjustment to site conditions
230 V secondary at 0.27 A continuous, with 190 VA S6 short-time headroom
II0 vector group — no electrical connection between primary and secondary, zero shielding windings

Technical Specifications

Parameter	Value
Rated Power (Pn)	63 VA
Short-Time Power (S6)	190 VA
Primary Voltage	230 V AC ±5% (218/230/242 V taps)
Secondary Voltage	230 V AC
Secondary Current	0.27 A
Efficiency	85%
Short-Circuit Voltage	8.4%
Core Type	EI 84/28
Thermal Class	B (IEC 60085)
Protection Class	IP00
Dimensions (W×H×D)	86 × 98 × 90 mm
Weight	1.65 kg
Standards	EN 61558-2-1, -2-2, -2-4
Certifications	CE, UKCA, cRUus, EAC

Typical Applications

Used to create floating 230 V circuits for noise-sensitive instrumentation, eliminate ground loops in distributed control systems, or provide reinforced isolation for touch-proof auxiliary supplies. Mounts via screws or DIN rail inside an enclosure. IP00 construction requires protection against environmental ingress.