The ABB CP-D 24/2.5 is a primary switch-mode DIN-rail power supply from the ABB CP-D range. It converts a wide-range input (90…264 V AC / 120…375 V DC, rated 100…240 V AC, 47…63 Hz) into an adjustable 24 V DC output at 2.5 A (60 W).

In ABB i-bus® KNX panels it is commonly used as an auxiliary 24 V supply for IP interfaces and IP routers when PoE is not available. ABB literature often references CP-D 24/1.32 for IPS/IPR class-1 loads; CP-D 24/2.5 provides higher current headroom for several IP devices or mixed 24 V accessory loads. It is not a KNX 30 V bus power supply (use SV/S or SU/S for bus current) and has no ETS application.

Official order code: 1SVR427044R0200. Typical efficiency 86 %; dimensions approx. 71 × 91 × 57.5 mm (W × H × D); enclosure and terminals IP20; net weight approx. 0.25 kg.

Key Features — Auxiliary 24 V DC

• Wide-range input: 90…264 V AC or 120…375 V DC for global panel supply conditions.
• 24 V / 2.5 A (60 W): Adjustable 24…28 V DC with U/I output characteristic.
• Hold-up: Power-failure buffering typically ≥ 60 ms at rated conditions (ABB datasheet).
• Status LEDs: Green DC ON and red DC LOW indication of output voltage state.
• Protection: Continuous short-circuit stability, overload limiting and no-load stability per CP-D design.
• MDRC installation: Tool-free snap-on mounting on 35 mm DIN rail; observe ABB clearance (typically 25 mm horizontal/vertical to adjacent units).

KNX panel use

• Typical loads: IPS/S3.1.1, IPS/S3.5.1, IPR/S3.1.1, IPR/S3.5.1 when not powered by PoE.
• Not for KNX TP bus: Do not feed the KNX bus from this 24 V output. Use SV/S30.640.5.1 or SV/S30.640.3.1 for 30 V SELV bus supply.
• Alternative: ISP/S8.1.1.1 PoE switch can power many IP endpoints without a separate 24 V PSU.

At a Glance

Specification	Detail
Product type	Primary switch-mode DIN-rail power supply (CP-D range)
Order code	CP-D 24/2.5 (1SVR427044R0200)
Rated input	100…240 V AC (90…264 V AC / 120…375 V DC)
Rated output	24 V DC / 2.5 A (60 W), adjustable 24…28 V DC
Efficiency	Typ. 86 %
Dimensions (W × H × D)	71 × 91 × 57.5 mm
Protection	IP20 (enclosure / terminals)
KNX ETS	Not applicable — auxiliary DC supply only

Full ratings, derating, wiring clearances and approvals are in the ABB CP-D technical literature under Downloads. Installation must be performed by a qualified electrician.