4AM2642-5AN00-0EB0 40VA Transformer 400/24V DIN, Siemens

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Product Specifications

Brand: Siemens
Part Number: 4AM2642-5AN00-0EB0
Type: Safety Isolating Transformer
Series: SITAS
Rated Power: 40 VA
Primary Voltage: 400 V AC (taps: 380/400/420 V)
Secondary Voltage: 24 V AC
Secondary Current: 1.67 A

Product Description

The Siemens 4AM2642-5AN00-0EB0 is a 40 VA SITAS safety isolating transformer supplying 24 V AC at 1.67 A from a 400 V AC supply, designed for higher-power control circuits requiring reliable galvanic isolation in industrial automation panels.

Performance and Protection

400 V primary with three voltage taps (380/400/420 V) compensating for ±5% supply fluctuations
76% operating efficiency with 15.3% short-circuit impedance — improved efficiency over 25 VA counterparts
EN 61558-2-6 safety isolating design, II0 vector group, zero shielding windings
UL/CSA recognized, CE, UKCA, and EAC certified for worldwide deployment

Technical Specifications

Parameter	Value
Rated Power	40 VA
Primary Voltage	400 V AC ±5% (380/400/420 V taps)
Secondary Voltage	24 V AC
Secondary Current	1.67 A
Efficiency	76%
Short-Circuit Voltage	15.3%
Core Type	EI 66/22
Thermal Class	B (IEC 60085)
Protection Class	IP00
Dimensions (W×H×D)	68 × 75 × 80 mm
Weight	1.0 kg
Certifications	CE, UKCA, cRUus, EAC

Application and Mounting

Snap-on DIN rail mounting for fast integration into industrial control cabinets. The 40 VA rating supports larger contactor loads and auxiliary circuits compared to 25 VA models. Install within an IP-rated enclosure. Screw and flat tab terminals enable secure, low-resistance connections on both primary and secondary sides.