ABB 1KHL178012R0016A TRM01 Power Supply – 24 V DC 16 A (384 W), 95% Efficiency, DIN-Rail PSU for ABB Control Panels

Technical Specifications

Main Features and Advantages

Wide-input 90–264 V AC with 95% efficiency.​ The ABB 1KHL178012R0016A (TRM01)​ doesn’t care whether the panel is fed from a 100 V Asian legacy leg, a 120 V North American branch, 208 V industrial, or 230 V EU mains—it regulates to 24.0 V DC and does it at 94–95% efficiency, so the 384 W rating translates to roughly 405 W drawn at the AC side and very little heat dumped into the cabinet. In a sealed MCC cell in July, that efficiency delta versus an 88% brick is the difference between +12 °C internal rise and +18 °C internal rise, and the S800 modules two slots over notice.Self-recovering protection quad (OVP/OCP/SCP/OTP).​ If a panel wiring error shorts the 24 V rail to chassis, or a solenoid valve coil goes low-impedance, the TRM01​ folds back rather than popping a fuse you have to hunt for at 3 a.m. Once the fault clears, it recovers—no button press, no fuse pull. The OTP side matters in hot cells: if cabinet ambient climbs past +50 °C (derating zone) the supply protects itself and the load, rather than drifting into unstable output that corrupts the PLC’s 24 V backplane. Front LEDs (Power / Fault / Overload) let the first-responder distinguish “supply dead” from “output overloaded” from “AC feed lost” without touching a meter.Compact DIN-rail form that doesn’t eat the panel.​ At 170 × 80 × 44 mm and 0.7 kg, the ABB 1KHL178012R0016A​ occupies one modest DIN slice—less than a standard S800 I/O module pair side-by-side. In compact Freelance skids, packaged boiler UCPs, and MCC instrumentation bays where the DIN rail is already crowded with terminal blocks, relays, and surge arresters, that footprint matters. Snap it onto the 35 mm rail, land L/N/PE on the AC terminals, land 24 V+/0 V on the DC terminals, torque to spec, done.Centralized 24 V beats distributed bricks.​ The design intent of the TRM01​ is “one PSU per panel” rather than a brick per device. For a typical ABB panel—AC800M CPU + 6 S800 slices + 8 panel relays + door HMI—the 16 A budget (384 W) at 24 V covers the steady-state draw with headroom, and a single breaker upstream protects the whole 24 V tree. MRO teams like this because the spare pool shrinks to “one 1KHL178012R0016A​ per panel type” instead of three different brick SKUs.Honest limitations, stated upfront.​ The ABB 1KHL178012R0016A​ is a single, non-redundant unit—if it fails, the 24 V rail drops until you swap it. For SIL-rated or high-availability racks (AC800M redundant pair, 800xA redundant node), step to SB801/SB802 redundant PSUs instead; the TRM01​ is the right SKU for non-redundant panels, not for the hot-swap-redundant tier. Also, the TRM family includes 1200 W and 1500 W siblings under nearby 1KHL order numbers—if your panel’s 24 V load audit comes in at 20 A or 30 A, the -R0016A (16 A) will be undersized. Photograph the removed unit’s full label before ordering; the 1KHL178012R…. suffix is the only reliable way to tell 384 W from 1200 W from 1500 W on the shelf.

Application Field

The ABB 1KHL178012R0016A (TRM01)​ clusters in ABB-branded control panels rather than in open-market PSU applications, which focuses its use on industries where ABB DCS/PLC platforms were specified at the original build. Oil & gas well-pad skids and gathering-station UCPs running Freelance AC 700F frequently use a TRM01​ as the single 24 V source for the CPU, the remote-I/O slice that hangs off the Modbus/Profibus link, and the panel-mounted ESD pushbutton relays—compact panel, one PSU, easy spare. Refinery tank-farm blend skids and P&ID-local control stations use the same pattern: a small ABB panel with 4–8 S800 I/O slices, a handful of interposing relays for MCC contactors, and a 1KHL178012R0016A​ feeding the lot from the local 120/230 V branch. Pulp & paper machine-room auxiliary cubicles (refiner lube skid, washer drive local panel, QCS remote I/O hut) run the TRM01​ because the 90–264 V AC input tolerates the site’s mixed-voltage feeds and the 95% efficiency keeps the un-air-conditioned hut from cooking in August.Water & wastewater package-lift stations and chemical-dose skids—often Freelance or AC 800M mini-racs in NEMA-4/X enclosures—use the ABB 1KHL178012R0016A​ as the 24 V backbone for the Magmeter transmitter supply, the VFD control-terminals, and the SCADA RTU. In all these cases the problem being solved is the same: the panel has 8–15 devices that each could take a brick adapter, but the plant wants one breaker, one spare, and one LED to glance at—and that is exactly what the TRM01​ delivers inside the ABB panel ecosystem. For higher-power siblings (1200/1500 W TRM variants) or redundant SB801/802 pairs, the application slides up to larger cubicles and redundant DCS nodes; the -R0016A stays in the “mid-size single PSU” lane.