Schneider Electric ABL8RPS24050 — Phaseo Universal Regulated Switch Mode Power Supply | 24V DC / 5A / 120W | 100–500V Input | DIN Rail | New

Walk into almost any industrial control panel that's been designed in the last fifteen years, and there's a reasonable chance you'll see a Phaseo power supply on the DIN rail. The ABL8RPS24050 sits in the middle of the Phaseo range — not the smallest, not the largest, but the 120W / 5A variant that covers the majority of automation panel applications where you're powering PLCs, I/O modules, sensors, and distributed control components from a single regulated 24V DC supply.

What makes this particular unit worth looking at carefully is the universal input range: 100–500V AC, single-phase or two-phase. That's not marketing language — it genuinely covers 100–120V North American single-phase, 200–240V European single-phase, and 380–500V industrial three-phase (phase-to-phase connection) without any manual voltage selection switch or jumper. The same unit works in a US factory, a European production line, and a Southeast Asian plant. For OEMs building machines that ship globally, this matters considerably.

✅ Genuine Schneider Electric (Square D). New, in original packaging. CE marked. RoHS compliant.

Catalog Number Decoded — ABL8RPS24050

Schneider's ABL8 naming convention is relatively straightforward once you know the pattern:

ABL8 — Product family identifier. ABL8 designates the Phaseo range of industrial DIN-rail power supplies. The broader ABL family includes ABL2, ABL4, and ABL7 variants for different voltage classes and mounting styles, but ABL8 is the current-generation regulated SMPS series.

R — Regulated output. Indicates the output is regulated (versus unregulated transformer-based supplies).

PS — Power Supply type within the family. PS designates the standard single-output regulated variants; RPM designates two-output models; WPS designates wider-body high-power models.

24 — Output voltage: 24V DC. The output is adjustable from 24V to 28.8V via the front panel trimmer — useful for compensating for voltage drops in long cable runs to distributed I/O.

050 — Output current in tenths of an amp: 5.0A. Combined with the 24V output, this gives a nominal rated power of 120W. The ABL8RPS range runs from 030 (3A, 72W) through 050 (5A, 120W) and 100 (10A, 240W).

Technical Specifications

Parameter	Specification
Reference	ABL8RPS24050
Range	Phaseo
Power Supply Type	Regulated switch mode (SMPS)
Input Voltage	100–120V AC (single-phase, L-N) / 200–500V AC (phase-to-phase, L1-L2)
Input Voltage Limits	85–132V / 170–550V
Network Frequency	47–63 Hz
Output Voltage	24V DC (adjustable 24–28.8V)
Output Current	5A continuous
Rated Power	120W
Temporary Boost Current	1.5 × In (7.5A) for 4 seconds
Efficiency	87–100%
Residual Ripple	≤ 200 mV
Line and Load Regulation	1–3%
Inrush Current	≤ 30A for 2ms
Power Factor	0.51 at 240V / 0.59 at 120V
PFC Filter	Yes, conforming to IEC 61000-3-2
Hold-Up Time	≥ 120ms at 400V / ≥ 40ms at 240V / ≥ 20ms at 100V
Overload Protection	Manual or automatic reset
Overvoltage Protection	30–32V, manual reset
Short-Circuit Protection	Manual or automatic reset
Undervoltage Trip	U < 21.6V
Thermal Protection	Automatic reset
Power Dissipation	15.5W
Status Indicators	1× green/red LED (output voltage) + 1× green/red/orange LED (output current)
Mounting	35×15mm or 35×7.5mm symmetrical DIN rail
Width	56mm
Height	143mm
Depth	155mm
Weight	0.7 kg
Output Coupling	Series or parallel (max. 2 units)
Redundancy Option	ABL8RED24400 redundancy module
Operating Temperature	-25°C to +60°C (no derating up to 60°C)
Storage Temperature	-40°C to +70°C
Relative Humidity	0–90% (operating) / 0–95% (storage)
IP Rating	IP20 per EN/IEC 60529
Dielectric Strength	3500V input-to-ground / 4000V input-to-output / 500V output-to-ground
Protection Class	Class I per VDE 0106-1
Safety Isolation	SELV output
Certifications	CE, UL, CCSAus, C-Tick
EMC Standards	EN 61000-6-1/6-2/6-3/6-4, EN/IEC 61204-3
Safety Standards	EN/IEC 60950-1, EN/IEC 61204-3
RoHS	Compliant (EU RoHS)

Universal Input — Why It Actually Matters in Practice

Most power supply product descriptions mention "universal input" as a checkbox feature without explaining what it means operationally. For the ABL8RPS24050, the practical implications are worth spelling out.

The three input modes the unit accepts are: 100–120V AC single-phase (North America, Japan), 200–240V AC single-phase (Europe, Australia, much of Asia), and 200–500V AC phase-to-phase (industrial three-phase in Europe and industrial facilities worldwide). No selector switch, no jumper to set. The unit detects and adapts automatically across this entire range.

For a machine builder, this means one SKU in the BOM covers global deployment. The same panel wired in Germany (400V three-phase from L1-L2) ships to a US customer who powers it from a 120V single-phase service, and the power supply runs correctly in both cases. The alternative — separate power supply variants for different regions — adds BOM complexity, spares management overhead, and the occasional mistake of shipping the wrong variant to a job site.

The extended voltage limits (85–132V and 170–550V) add further headroom for applications where line voltage quality is poor — common in remote industrial sites, developing-market manufacturing facilities, and buildings where voltage fluctuation is routine.

The Boost Feature — Short-Term Current Headroom for Demanding Loads

One specification that often gets overlooked in product descriptions is the temporary boost current: 1.5 × In for 4 seconds, meaning the ABL8RPS24050 can deliver up to 7.5A for brief periods without tripping.

This matters in practice for loads with high inrush current characteristics. Electromechanical contactors pulling in simultaneously, solenoid valves energizing on a transition, or a batch of 24V sensors powering up together — these events create momentary demand spikes that can trip a power supply sized exactly at its rated current. The 150% boost headroom is Schneider's built-in margin for these scenarios, allowing the supply to support normal load transients without nuisance tripping.

The 4-second window aligns with typical inrush duration for the loads commonly powered in automation panels. After 4 seconds, the supply returns to its protection threshold behavior. The protection reset mode (manual or automatic) determines what happens if the boost period is exceeded — automatic reset suits unattended systems, manual reset is appropriate where a technician needs to investigate before restarting.

Hold-Up Time — What Happens When AC Power Dips

The hold-up time specification tells you how long the power supply maintains its regulated DC output after AC input power disappears. For the ABL8RPS24050:

≥ 120ms at 400V input — At 400V three-phase industrial supply, the output holds up for at least 120 milliseconds after a complete AC loss.
≥ 40ms at 240V input — Standard European single-phase.
≥ 20ms at 100V input — North American 120V single-phase.

Why does this matter? A 20ms hold-up at 100V means the supply bridges one complete 50Hz line cycle (or slightly more than one 60Hz cycle) after power loss. For a PLC-based control system, this means the processor has time to complete its current scan cycle and begin an orderly shutdown sequence rather than suffering an abrupt power loss that could corrupt output states or trip fault conditions. In applications with uninterruptible power supply (UPS) backup, the hold-up time determines how cleanly the transition to battery occurs.

Series and Parallel Connections

When the standard 5A/120W output isn't sufficient, Schneider supports both series and parallel connections of up to two ABL8RPS24050 units, with some constraints.

Parallel connection (to increase available current to 10A/240W): Requires two identical references. Two Schottky diodes (minimum rated at the supply's output current and 50V) are needed for current sharing. Alternatively, the ABL8RED24400 redundancy module handles parallel connection more cleanly, providing automatic switchover if one supply fails — relevant for applications where continuous 24V availability is critical.

Series connection (to produce 48V DC or other higher voltages): Stacking two units gives a 48V output at 5A. Series connection is less common in automation panels but appears in applications requiring 48V for specific field devices or communication equipment.

Both configurations are limited to two units maximum. Using identical references is required for series/parallel operation to ensure matched characteristics.

Recommended Circuit Protection

Schneider's product documentation (Capital Electric Supply catalog data) identifies specific thermal-magnetic circuit breakers for upstream protection of the ABL8RPS24050: the GB2CD07, GB2CD08, GV2RT06, and GV2ME06 models. These breakers are coordinated with the power supply's inrush current characteristic (≤30A for 2ms) to avoid nuisance tripping during startup while providing proper overcurrent protection under fault conditions.

Using an incorrectly rated circuit breaker upstream — particularly one with a standard tripping curve that doesn't account for the SMPS inrush — is a common installation error that results in nuisance trips during power-on. The fact that Schneider specifies compatible breakers by part number in the documentation makes this coordination straightforward.

❓ FAQ — Schneider Electric ABL8RPS24050

Q1: Does the ABL8RPS24050 need a voltage selector switch for different countries?

No — this is the key advantage of the "universal" input design. The ABL8RPS24050 automatically accepts 85–132V AC (single-phase, covering North America and Japan), 170–550V AC (single-phase, covering Europe, Australia, and most of Asia), and 200–500V AC phase-to-phase (industrial three-phase). There is no selector switch, no jumper, and no manual configuration needed. The unit detects the input voltage and operates correctly across the entire range. For OEMs building machinery for global markets, this means one power supply specification works everywhere without regional variants.

Q2: What is the difference between the ABL8RPS24050 and ABL8RPS24030 or ABL8RPS24100?

All three are Phaseo regulated SMPS units with the same 24V DC output and universal input. The difference is the output current — and consequently the total power and physical width. The ABL8RPS24030 delivers 3A (72W) and is 44mm wide. The ABL8RPS24050 (this unit) delivers 5A (120W) and is 56mm wide. The ABL8RPS24100 delivers 10A (240W) and is 85mm wide. All three share the same input voltage range, EMC ratings, certifications, and mounting style. Choose based on the total 24V load in your panel — a common approach is to calculate the maximum simultaneous load and select the next standard rating above that figure to provide adequate margin.

Q3: Can the output voltage be adjusted, and for what purpose?

Yes — the output voltage is adjustable from 24V to 28.8V using the front panel trimmer potentiometer. The primary use case is compensating for voltage drop in long cable runs from the power supply to remote I/O or sensors. A 24V sensor at the end of a 50-meter cable run may see less than 24V at its terminals due to cable resistance; adjusting the supply output to 25V or 26V restores correct operating voltage at the load. This adjustment is useful but should be made carefully — some 24V-rated components have specified maximum operating voltages below 28.8V, so verify load specifications before trimming above 24V. The undervoltage trip threshold (U < 21.6V) applies regardless of the output voltage setting.

Q4: What do the two status LEDs indicate, and what do their colors mean?

The ABL8RPS24050 has two front-panel LEDs that provide real-time supply status without needing a meter. The first LED monitors output voltage: green indicates nominal output voltage (24V DC within regulation range), red indicates a voltage fault (overvoltage or undervoltage condition). The second LED monitors output current: green indicates normal load (below rated current), orange indicates the boost zone (supply is delivering 1.5× In for a transient overload), and red indicates an overload or short-circuit condition with protection active. In a panel with multiple supplies, these LEDs allow rapid visual identification of a supply in fault state without opening the door and probing with a meter — a practical benefit during routine maintenance checks.

Q5: What is the IP20 protection rating, and where can this supply be installed? IP20 per EN/IEC 60529 means the supply is protected against solid objects larger than 12.5mm (finger-safe) but has no protection against liquids. This rating is appropriate for installation inside closed control cabinets and electrical enclosures, but not for direct exposure to moisture, condensation, or wash-down environments. For installations in areas where the cabinet door may be open and water ingress is possible, the cabinet itself must provide the liquid protection — the supply does not. The operating humidity range is 0–90% non-condensing. The operating temperature range is -25°C to +60°C without derating, which covers most industrial control panel environments including unheated enclosures in moderate climates.

Q6: How does the protection reset work — what is the difference between manual and automatic reset?

The ABL8RPS24050 supports both automatic and manual reset for overload and short-circuit conditions, selectable via the front panel switch. In automatic reset mode, after an overload or short-circuit clears, the supply attempts to restart automatically — useful in unattended systems where the fault is transient (an inrush event, a momentary short). In manual reset mode, the supply latches off after a fault and requires deliberate operator action to restart — appropriate where the fault should be investigated before the system is returned to service. Overvoltage protection (30–32V threshold) uses manual reset only, meaning an overvoltage event always requires operator acknowledgment. Thermal protection (for overtemperature conditions) resets automatically once the unit cools to safe operating temperature.

Q7: Can two ABL8RPS24050 units be connected in parallel for higher current output?

Yes, up to two units can be connected in parallel to provide a combined 10A / 240W output, but with specific requirements. The units must be identical references (two ABL8RPS24050 — not mixing with ABL8RPS24030 or other variants). Current sharing in direct parallel connection requires two Schottky diodes, each rated at minimum the supply's output current and 50V, to prevent circulating current between the two units. For a cleaner implementation, Schneider offers the ABL8RED24400 redundancy module, which manages parallel connection properly and adds automatic redundancy — if one supply fails, the other maintains full output without interruption. The redundancy module approach is preferred in applications where continuous 24V availability is a system requirement.

ABL8RPS24050 New In Stock ABL8RPS24050 Schneider Universal Power Supply