Description:
The ABB 1KHL178012R0016A, also designated as TRM01, is a high-reliability switch-mode power supply module manufactured by ABB for industrial automation control cabinets. It accepts a wide-range AC mains input (90–264 V AC) and delivers a tightly regulated 24 V DC output at up to 16 A (384 W nominal). Designed for continuous-duty operation in demanding plant environments, the 1KHL178012R0016A supplies stable 24 V DC control power to PLC racks, I/O modules, sensors, relays, and HMIs, and is commonly deployed as the primary or redundant system power source in ABB 800xA, Advant, and Freelance DCS/PLC installations.
Application Scenarios:
Imagine a continuous-process chemical plant where the original 20-year-old linear power supply feeding the ABB control rack begins to drift—output drops to 22.8 V DC under summer peak load, causing intermittent I/O module resets and spurious alarms on the third shift. The instrument engineer specifies the ABB 1KHL178012R0016A TRM01 as a direct-form-fit replacement. After a scheduled 15-minute power-down, the old unit is unclipped from the 35 mm DIN rail, input/output terminals are transferred to the new module, and power is restored. The 1KHL178012R0016A immediately delivers a rock-steady 24.0 V DC across the full load range, with its green “DC OK” LED confirming healthy operation at a glance through the cabinet window. The plant eliminates nuisance resets, gains >94 % conversion efficiency (reducing cabinet heat load), and benefits from built-in short-circuit and overload protection that auto-recovers once the fault is cleared—no fuse replacement required. The key pain point solved: a drop-in, high-efficiency 24 V DC source that restores system voltage margin and protects downstream electronics in a single, cost-effective upgrade.
Parameter:
| Main Parameters | Value/Description |
|---|---|
| Product Model | 1KHL178012R0016A (TRM01 Series) |
| Manufacturer | ABB (Sweden / Switzerland) |
| Product Category | Switch-Mode Industrial Power Supply Module (24 V DC Output) |
| Input Voltage | 90–264 V AC (universal), 47–63 Hz; some variants also accept 120–370 V DC |
| Output Voltage | 24 V DC ±1 % (adjustable typically 22.5–28.5 V DC via trim pot) |
| Rated Output Current | 16 A continuous @ 40 °C ambient |
| Rated Power | 384 W (24 V × 16 A) |
| Efficiency | ≥ 94–95 % @ full load (typical) |
| Protections | Short-circuit, overcurrent, overvoltage, overtemperature — auto-recovery |
| Indicators | Green LED = Output OK / DC Normal; Red/Amber = Fault or Undervoltage |
| Mounting | 35 mm DIN rail (EN 60715) or screw-mount in cabinet |
| Operating Temp. | -20 °C to +50 °C (derating above 50 °C); storage: -40 °C to +85 °C |
| Ingress Protection | IP20 (finger-safe terminals, for enclosed panel mounting) |
| Certifications | CE, UL 508 / UL 60950, cUL, TÜV, CB Scheme, RoHS compliant |
Technical Principles and Innovative Values:
The 1KHL178012R0016A employs active PFC (Power Factor Correction) and secondary-side synchronous rectification to achieve high efficiency with minimal heat dissipation—a critical advantage in densely populated control cabinets.
- Innovation Point 1: Wide-Range Universal Input with Active PFC. The 1KHL178012R0016A accepts any single-phase mains from 90 V to 264 V AC without manual voltage selection, making it globally deployable. Active PFC (>0.90 typical) reduces input current harmonics and improves power quality on the plant’s AC distribution—important for sites with sensitive measurement equipment sharing the same mains feeders.
- Innovation Point 2: Power-Fail Signaling & Remote Monitoring Readiness. The module’s DC-OK relay contact or open-collector output (model-dependent) can be wired to a PLC digital input or annunciator to alert maintenance before a complete supply collapse. This gives early warning of pre-failure conditions such as overtemperature or input-sag-induced output droop—enabling proactive intervention rather than a surprise cabinet blackout.
- Innovation Point 3: Parallel-Operation Capability for N+1 Redundancy. When specified in redundant configurations, multiple 1KHL178012R0016A units can be diode-OR’d (using external decoupling diodes or an ABB redundancy module) to provide N+1 fault-tolerant 24 V DC power. This is essential for safety-related or continuously-operating systems where even a brief power interruption is unacceptable.
