ABB L110-24-1 – Compact AC/DC Power Supply for Industrial Control Systems

One thing I appreciate about the ABB L110-24-1 is how it balances simplicity with solid performance in demanding environments. It’s not flashy, but if you’re running a control cabinet in a manufacturing or process automation setup, this power supply typically does exactly what you need—deliver stable 24 VDC from either AC or DC input sources, without breaking a sweat.

Key Features

• Wide Input Range (85–264 VAC / 110 VDC): Handles both AC and DC inputs, making it ideal for hybrid systems or backup-powered installations where input stability varies.
• 24 VDC Output at 4.5 A (110 W): Delivers consistent voltage for PLCs, sensors, relays, and small HMI panels—enough headroom for moderate expansion.
• High Efficiency (>88%): Reduces heat buildup in enclosed cabinets, which in many cases means less reliance on active cooling.
• DIN-Rail Mounting: Clips directly onto standard TS35 rails, saving space and simplifying replacement during maintenance cycles.
• Short-Circuit & Overload Protection: Automatically recovers after fault clearance, reducing downtime in unattended operations.
• LED Status Indicators: Green OK light gives immediate visual feedback—helpful when troubleshooting on-site without test gear.

Technical Specifications

Application Fields

You might notice that the L110-24-1 shows up frequently in packaging lines, water treatment controls, and smaller machine builds. From my experience, it’s especially common in OEM equipment where reliability matters more than modularity. It powers basic automation stacks—think S7-1200-class PLCs, valve islands, photoelectric sensors, and emergency stop relays—all without needing redundant setups.

It’s also been used in railway signaling cabinets (non-critical zones) due to its wide temperature tolerance and ability to run off legacy 110 VDC rail power systems.

Advantages & Value

While it doesn’t have remote monitoring or digital bus integration like some newer models, the L110-24-1 remains a cost-effective choice for straightforward applications. In many cases, customers tell me they keep spares on hand because failure rates are low—and replacements are quick thanks to plug-and-play wiring.

ABB’s build quality seems to pay off here: fewer field returns compared to generic brands, even under fluctuating line voltages. That consistency can reduce long-term service costs, especially in distributed sites where labor time is expensive.

Installation & Maintenance

Mounting is straightforward—just snap it onto a TS35 rail and torque the terminals to 0.6 Nm. Make sure there’s at least 10 mm clearance on each side for airflow, especially if operating above 60°C. These units don’t require forced cooling in most control panels, but avoid stacking them directly next to high-heat components like motor drives.

For maintenance, inspect terminal tightness annually—vibration can loosen connections over time. No firmware updates or calibration needed, which keeps things simple. Just wipe dust off occasionally; no compressed air near electronics, though.

Quality & Certifications

This unit carries CE, UL/cUL (Class 2), and RoHS compliance—standard for industrial deployment across North America and Europe. The design follows IEC/EN 61010-1 safety standards for measurement and control equipment.

The manufacturer warranty is 365 days, which aligns well with typical project commissioning periods. If installed correctly and operated within spec, these often last several years beyond that.

Ordering & Delivery Notes

In-stock units ship within one week. For larger orders or backordered batches, delivery takes no more than four weeks. We require 50% advance payment, with full balance due before shipment. Express options include FedEx, UPS, and DHL—ideal for urgent panel retrofits or downtime recovery.