Siemens 6EP1321-1LD01 SITOP PSU100D 12V/3A Stabilized Power Supply 100-240V AC Input Power Supply

The Siemens 6EP1321-1LD01 is a SITOP PSU100D stabilized power supply converting 100-240 V AC single-phase input into a regulated, adjustable 12 V DC output at up to 3 A. It reaches 86% efficiency, holds output within 1% overall tolerance, rides through a 16 ms mains interruption at rated load, and mounts directly to the wall in an 82 x 29 x 99 mm enclosure.

Technical Specifications

Certifications & Standards

• CE
• UKCA
• CB
• EPD

Selection Notes

The 16 ms buffering time and 45 A inrush rating let the PSU100D ride through short mains dips without dropping the 12 V rail, and the potentiometer-adjustable output (10.8-13.2 V) allows compensating for cable voltage drop on longer runs to the load. Choose this 3 A rating over the lighter PSU100D variants when the connected load's steady-state current stays under 3 A; the electronic short-circuit protection auto-restarts once the fault clears, so no manual reset is needed after a transient short.