steve
Got hold of Sime for a Carrier card for…
Got hold of Sime for a Carrier card for a chiller. Machine down in a factory. Received the new card in express time machine and plant now up and running fantastic service form Sime
3 months ago
4AM4342-5AT10-0FA0
Siemens 4AM4342-5AT10-0FA0 available at EU Automation. Get in touch today for a quick price.
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What happens next?
1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
Siemens 4AM4342-5AT10-0FA0 is a SITAS single-phase control and isolation transformer designed for stepping down a 400 V AC supply (±5%) to a 230 V AC secondary output at 50–60 Hz. With a rated apparent power of 315 VA and a short-term rating of 1.12 kVA (S6 duty), it is well suited to supplying stable control voltages in industrial panels, machinery control circuits and auxiliary power applications where galvanic isolation is required.
This transformer features an EI 105/60 core construction, screw/tab connection terminals on both primary and secondary sides, and screw mounting for straightforward panel integration. It is built for operation in ambient temperatures up to 40 °C, uses IEC 60085 thermal class B insulation, has IP00 protection, and is verified to CE and cRUus recognition.
This transformer features an EI 105/60 core construction, screw/tab connection terminals on both primary and secondary sides, and screw mounting for straightforward panel integration. It is built for operation in ambient temperatures up to 40 °C, uses IEC 60085 thermal class B insulation, has IP00 protection, and is verified to CE and cRUus recognition.
| Specification | Description |
|---|---|
| Manufacturer | Siemens |
| Part Number | 4AM4342-5AT10-0FA0 |
| Alternative Part Number | 4AM43425AT100FA0 |
| Product Type | Control circuit transformer / isolation transformer (SITAS) |
| Brand / Series | SIDAC |
| Number of Phases (Primary / Secondary) | 1 / 1 |
| Rated Apparent Power (Continuous) | 315 VA |
| Short-Term Apparent Power (S6) | 1,120 VA |
| Primary Voltage (Rated) | 400 V AC ±5% (taps: 380 V / 400 V / 420 V) |
| Secondary Voltage (Rated) | 230 V AC |
| Secondary Current (Rated) | 1.37 A |
| Frequency | 50 to 60 Hz |
| Efficiency (Typical) | 0.9 |
| Vector Group / Switching Group | Ii0 |
| Shield Winding | None (0) |
| Relative Short-Circuit Voltage | 5.59% |
| Thermal Class (IEC 60085) | Class B |
| Rated Ambient Temperature | 40 °C |
| IP Rating | IP00 |
| Connection Type (Primary / Secondary) | Screw terminals / tab terminals |
| Mounting Method | Screw mounting |
| Core Construction | EI 105/60 |
| Dimensions (W × H × D) | 0.107 m × 0.111 m × 0.12 m |
| Conformity / Approvals | CE, cRUus (UL/CSA recognised) |
| Standards | EN 61558-2-1, EN 61558-2-2, EN 61558-2-4 |
| Product Description (English, UK) | The Siemens 4AM4342-5AT10-0FA0 is a single-phase SITAS isolation transformer designed to provide a stable 230 V AC secondary supply from a 380/400/420 V AC primary source. With a 315 VA continuous rating and robust screw-mount construction, it is well suited for panel integration where dependable control-circuit power and electrical separation are required. |
What is this product used for?
This is a single-phase control/isolation transformer designed to provide a 230 V AC secondary supply from a 3-tap 380/400/420 V AC primary. It is commonly used to power control circuits, auxiliary supplies, and 230 V loads from industrial mains.
What are the input (primary) voltage options?
The primary side supports 380 V, 400 V, and 420 V AC rated inputs (to suit typical 400 V networks and tolerance conditions). Selection is made via the primary terminals.
What is the output (secondary) voltage?
The secondary output is rated at 230 V AC, single-phase.
What is the rated power of the transformer?
The rated apparent power is 315 VA (0.315 kVA). This is the continuous operating rating under the stated conditions.
What is the maximum secondary current available?
At the 315 VA rating and 230 V secondary, the rated secondary current is 1.37 A.
Can it operate on both 50 Hz and 60 Hz supplies?
Yes. The transformer is specified for 50 to 60 Hz operation on both input and output.
Does it provide galvanic isolation between primary and secondary?
Yes. It is specified as an isolation transformer, providing separation between the primary and secondary circuits for control and auxiliary power applications.
What environmental limits should be considered for normal operation?
It is designed for a rated ambient temperature of 40 °C and thermal class B insulation (per IEC 60085).
What is the enclosure/protection rating?
The protection class is IP00, meaning it is open type and intended to be installed within a suitable enclosure or panel arrangement.
What type of electrical connections does it use?
It uses screw-type terminals and tab terminals on both the primary and secondary sides (for the main current circuit).
How is it mounted?
It is designed for screw mounting.
What are the overall dimensions?
The listed dimensions are approximately 0.107 m (width) × 0.111 m (height) × 0.12 m (depth).
Which standards and approvals does it align with?
It is specified to EN 61558-2-1, EN 61558-2-2, and EN 61558-2-4, and is verified as CE and cRUus recognised. If you need the exact marking set for your build documentation, you can reference Siemens 4AM4342-5AT10-0FA0 on the product label.
- Stepping down a 400 V AC single-phase supply to 230 V AC for machine control panels and auxiliary circuits
- Providing galvanic isolation between the incoming mains supply and downstream control equipment to reduce electrical interference transfer
- Supplying 230 V AC control voltage to contactors, relays, solenoids, and other panel-mounted actuators in industrial automation systems
- Powering 230 V AC instrumentation and panel accessories where a dedicated, isolated control supply is required
- Creating a stable, transformer-based control supply for machinery operating on 50–60 Hz networks
- Supporting control circuit power distribution in OEM-built electrical cabinets where compact screw-mounted transformers are preferred
- Enabling voltage conversion in retrofit projects when existing equipment requires 230 V AC from a 400 V AC source
- Providing an isolated 230 V AC source for test benches and commissioning setups within industrial electrical environments
This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
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Customer reviews
steve
Daniel
Excellent customer service...
Alex Bailey is my main point of contact at EU Automation...he is extremely friendly, has exceptional customer service skills and always offers great pricing & lead times.
4 months ago
Jerry Schrink
Tom Higgins provided amazing service
Tom Higgins provided great prompt service. I contacted Tom by phone and within 10 minutes there was a quote in my in box. WOW Thank you Tom and Thank you EU Automation!
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Paulo Pereira
Excellent service and communication…
Excellent service and communication from Alex Bailey. He truly goes above and beyond to ensure his clients are 100% satisfied. The entire process was seamless, and his attention to detail made a huge difference. Highly recommended for anyone looking for amazing service!
5 months ago
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Tom Higgins did a great job at getting…
Tom Higgins did a great job at getting us the part we needed. He saw a concern with the part a verified before shipping.
5 months ago
Lessle Smith
Thomas Higgins has gone above and…
Thomas Higgins has gone above and beyond to make things happen for my facility. His customer service and knowledge were an asset in helping me with my order and the logistics challenges!
6 months ago
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