1606-XLS480E — 480W DIN Rail Power Supply, 24–28V DC, 20A

The 1606-XLS480E is a 480W performance-tier DIN rail power supply, delivering 20A at 24V DC (17A at the upper 28V end of its adjustable range) from a universal 100–240V AC or 110–300V DC input. It uses synchronous rectification for roughly 94% typical efficiency, spring-clamp terminals for fast field wiring, and a 150% short-term power boost capability that helps the unit absorb motor starting and capacitor charging transients without forcing an oversized continuous rating.

Specifications

Parameter	Value
Part Number	1606-XLS480E
Output Voltage	24–28V DC (adjustable)
Output Current	20 A @ 24V, 17 A @ 28V
Output Power	480 W (490 W continuous at 28V)
Input Voltage (AC)	100–240V AC, 50/60 Hz
Input Voltage (DC)	110–300V DC
Efficiency	~93.9% typical
Power Boost	150% for up to ~4 seconds
Power Factor	~0.9
Terminal Type	Spring-clamp (tension clamp)
Mounting	35 mm DIN rail

Power Boost and Why It Matters for Motor Starting Loads

Standard continuous-rated power supplies size their output strictly to the steady-state load — any momentary demand spike above that rating either trips the supply's protection or sags the output voltage. The 1606-XLS480E's 150% power boost, available for up to roughly 4 seconds and repeatable after a recovery period, specifically targets the brief, predictable inrush events that 24V DC loads commonly produce: a contactor coil energizing, a capacitive load charging, or a small DC motor starting. Rather than specifying a larger continuous-rated supply just to cover these short transients, the boost capability lets a correctly-sized 480W unit absorb them directly.

The large built-in output capacitors work alongside the boost feature for the same purpose — buffering momentary load steps so the regulated output voltage doesn't dip noticeably during the transient, which keeps sensitive downstream electronics like PLCs and HMIs from seeing a voltage sag that could otherwise cause a nuisance restart or fault.

FAQ

Q: How often can the power boost feature be triggered?

The boost is repeatedly available, but an internal output power manager controls timing — once a boost period ends, a recovery interval applies before the next boost can be triggered, preventing the boost feature from being used as a sustained overload mechanism.

Q: Can this supply be paralleled with another unit for higher current or redundancy?

Yes, but only with another unit from the same XLS series — mixing series isn't supported, and the DC-OK signal coordination between paralleled units depends on using matched series supplies.

Q: Does this supply work on a two-phase input instead of standard single-phase or three-phase?

Two-phase operation is supported on certain configurations within this family with output current reduced according to the manufacturer's specific derating curve for that mode — verify the exact operating mode and rating reduction against the unit's documentation before relying on this configuration.

Q: What protects the supply against a short circuit on the output?

Built-in short-circuit protection limits output current automatically and the supply recovers on its own once the fault clears — no internal fuse replacement is needed for a transient output short-circuit event.

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