7KM42120BA003AA0 | SENTRON, measuring device, 7KM PAC4200, LCD, LL: 690 V, LN: 400 V, 5 A, 3phase, Modbus TCP, optionally Modbus RTU / PROFINET / PROFIBUS / DI/DQ, apparent / active / reactive energy / cos phi, harmonics: 2nd to 64th, THD, Class 0.2 acc. to IEC6155712 or Class 0.2S acc. to IEC6205322, widerange power supply 95 to 240 V +10% (AC), 110 to 340 V +10% (DC) screw terminals Siemens

Name: 7KM42120BA003AA0 | SENTRON, measuring device, 7KM PAC4200, LCD, LL: 690 V, LN: 400 V, 5 A, 3phase, Modbus TCP, optionally Modbus RTU / PROFINET / PROFIBUS / DI/DQ, apparent / active / reactive energy / cos phi, harmonics: 2nd to 64th, THD, Class 0.2 acc. to IEC6155712 or Class 0.2S acc. to IEC6205322, widerange power supply 95 to 240 V +10% (AC), 110 to 340 V +10% (DC) screw terminals Siemens - myelectric.in
Brand: Siemens
SKU: 7KM42120BA003AA0

SKU: 7KM42120BA003AA0

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Looking for the 7KM42120BA003AA0 | SENTRON, measuring device, 7KM PAC4200, LCD, LL: 690 V, LN: 400 V, 5 A, 3phase, Modbus TCP, optionally Modbus RTU / PROFINET / PROFIBUS / DI/DQ, apparent / active / reactive energy / cos phi, harmonics: 2nd to 64th, THD, Class 0.2 acc. to IEC6155712 or Class 0.2S acc. to IEC6205322, widerange power supply 95 to 240 V +10% (AC), 110 to 340 V +10% (DC) screw terminals Siemens? This genuine Siemens dc power supply / smps is built for stable DC control power, combining proven reliability with full compliance to applicable IEC/IS standards. Key ratings include 5 A, 95–240V AC. Order part number 7KM42120BA003AA0 from myelectric.in — a trusted Siemens supplier offering competitive pricing, GST billing, and shipping across India and overseas.

📋 Technical Specifications

Parameter	Value
Brand	Siemens
Part Number / SKU	7KM42120BA003AA0
Category	DC Power Supply / SMPS
Current Rating	5 A
Voltage Rating	95–240V AC
Phase	3 Phase (3Ø)
Input Frequency	47–63 Hz
Output Protection	Short-circuit, overload, overvoltage — auto recovery
Mounting	35mm DIN rail (EN 60715)
Cooling	Natural convection (no fan)
Standard	IEC 61204 (LV power supplies)
Certifications	BIS certified, CE, cULus (select models)

⚡ Key Features

5 A output current — sized to power a full PLC rack with I/O modules, solenoid coils, and indicator lamps from a single supply unit.
Electronic short-circuit and overload protection — output current-limits on fault and self-recovers automatically on fault clearance; no fuses to replace after a wiring short.
35mm DIN rail mounting (EN 60715) — snaps into the control panel rail alongside MCBs and terminal blocks; no separate bracket or drilling required.
Manufactured to IEC 61204 (LV power supplies) — complies with the applicable Indian BIS and IEC international standards for this product category.
BIS certified, CE, cULus (select models) — meets Indian regulatory requirements for use in government, commercial, and industrial electrical installations.
Genuine authorised Siemens product — sourced directly from the official distribution network with full manufacturer traceability and warranty.
GST invoice provided for India orders — valid for corporate procurement, government project orders, and public tender supply via myelectric.in.
Worldwide export available — UAE, Singapore, UK, USA, Sri Lanka & more. Contact +91 94814 00316 for bulk pricing and international shipping.

❓ Frequently Asked Questions

Q: What is the significance of the 5 A rating on the 7KM42120BA003AA0?

A: The 5 A rating is the device’s maximum continuous current carrying capacity under specified conditions (typically 40°C ambient). For circuit design, use 80% of this value as the design current to allow for derating due to grouping, temperature, and future load growth.

Q: Is the 7KM42120BA003AA0 compatible with both 110V and 230V AC mains supply?

A: Yes. The 7KM42120BA003AA0 accepts a wide-range 95–240V AC input, making it compatible with Indian 230V AC single-phase supply, 110V AC international supply, and generator output which may fluctuate. No voltage selector switch is required — the universal-input switching design handles the full input range automatically, simplifying installation and reducing procurement variants.

Q: Can multiple 7KM42120BA003AA0 units be connected in parallel to increase output current?

A: Standard SMPS units like the 7KM42120BA003AA0 are not designed for direct parallel operation without active current-sharing circuitry. Connecting outputs in parallel without current sharing causes one unit to carry the full load while the other idles — leading to premature failure. For higher current requirements, use a single higher-rated PSU or use Siemens-specified redundancy modules that manage load sharing and provide N+1 fault tolerance for critical applications.