Power supply; Compact; 1-phase; 18 VDC output voltage; 1.25 A output current; DC-OK LED
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Quick facts
| Availability | Confirmed on request |
| Category | Power Supplies |
| Lifecycle | active |
| Warranty | 12-month (new) · 3-month (used/refurbished) |
Shipping & availability
When can 787-2857 be shipped?
787-2857 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.
Can I pick up 787-2857 in person?
Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.
Is express delivery available?
Yes — mention it when you request a quote for 787-2857 and we'll include express shipping options in our reply.
My factory is down and I need this urgently — can you help?
For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for 787-2857, subject to availability and destination.
<p><b>Features:</b></p><ul><li>This 787-2857 Switched-Mode Power Supply is specially designed to supply the 753-647 DALI Multi-Master Module.</li><li>Several DALI Multi-Master Modules can be supplied in parallel.</li><li>Stepped profile for installation in standard distribution boards</li><li>Connection technology with Push-in CAGE-CLAMP®</li><li>Suitable for both parallel and series operation</li><li>Electrically isolated output voltage (SELV) per EN/UL 61010-1 or EU/UL 61010-2-201</li></ul>
Specifications
Technical data - Input
| Phases | 1 |
| Nominal input voltage U<sub>i nom</sub> | 1 x 100 … 240 VAC |
| Input voltage range | 1 x 100 … 264 VAC |
| Nominal mains frequency range | 50 … 60 Hz |
| Input current I<sub>i</sub> | ≤ 0.4 A (100 VAC); ≤ 0.2 A (240 VAC) |
| Inrush current | ≤ 24 A (NTC) |
| Mains failure hold-up time | ≥ 95 ms (230 VAC) |
Technical data - Output
| Nominal output voltage U<sub>o nom</sub> | 18 VDC (SELV) |
| Nominal output current I<sub>o nom</sub> | 1.25 A (18 VDC) |
| Nominal output power | 22 W |
| Deviation | ≤ 2 % |
| Residual ripple | ≤ 60 mV (peak-to-peak) |
| Overload behavior | Hiccup |
Technical data - Signaling and communication
| Signaling | 1 x Status indication LED (green) |
| Operation status indicator | Green LED (Uo) |
Technical data - Efficiency/power losses
| Power loss P<sub>l</sub> | ≤ 0.5 W (230 VAC; no load); ≤ 4 W (230 VAC; nominal load) |
| Power loss (max.) P<sub>l (max.)</sub> | 5 W (110 VAC / 24 VDC; 1.35 A) |
| Efficiency (typ.) | 88 % |
Technical data - Circuit protection
| Internal fuse | T 1.25 A / 250 VAC |
| Backup fuse (recommended) | 16 A (for USA/Canada: 15 A) |
Safety and protection
| Isolation voltage (pri.-sec., AC) | 3,920 V |
| Isolation voltage (pri.-PE, AC) | 2,470 V |
| Isolation voltage (sec.-PE) | 0.5 VDC |
| Protection class | I |
| Protection type | IP20; per EN 60529 |
| Overvoltage category | III (≤ 2000 m a.s.l.); II (> 2000 m a.s.l.) |
| Pollution degree | 2 |
| Overvoltage protection; secondary | ≤ 32 VDC (in the event of a fault) |
| Short-circuit-protected | Yes |
| Open-circuit-proof | Yes |
| Parallel operation | Yes |
| Series operation | Yes |
| MTBF | > 2,500,000 h (per EN/IEC 61709 at +40 °C) |
Connection data
| Cable length (max.) | 30 m |
Connection data - Connection 1
| Connection type | Input |
| Connection technology | Push-in CAGE CLAMP® |
| WAGO connector | WAGO 804 Series |
| Solid conductor | 0.25 … 2.5 mm² / 20 … 12 AWG |
| Fine-stranded conductor | 0.25 … 2.5 mm² / 22 … 12 AWG |
| Strip length | 10 … 11 mm / 0.39 … 0.43 inches |
Connection data - Connection 2
| Connection type | Output |
| Connection technology | Push-in CAGE CLAMP® |
| WAGO connector | WAGO 805 Series |
| Solid conductor | 0.2 … 1.5 mm² / 24 … 16 AWG |
| Fine-stranded conductor | 0.2 … 1.5 mm² / 24 … 16 AWG |
| Strip length | 9 … 10 mm / 0.35 … 0.39 inches |
Physical data
| Width | 36 mm / 1.417 inches |
| Height | 90 mm / 3.543 inches |
| Depth | 62 mm / 2.441 inches |
| Depth from upper-edge of DIN-rail | 55 mm / 2.165 inches |
Mechanical data
| Mounting type | DIN-35 rail |
Material data
| Flammability class per UL94 | V0 |
| Weight | 120 g |
Environmental requirements
| Ambient temperature (operation) | -25 … +70 °C (Nominal mounting position; -25 … +55 °C (in any mounting position)) |
| Ambient temperature (storage) | -40 … +85 °C |
| Relative humidity | 5 … 96 % (no condensation permissible) |
| Derating | −1.7 %/K (> 55 °C) |
| Operating altitude (max.) | 5000 m |
Standards and specifications
| Conformity marking | CE |
| Standards/specifications | EN 61204-3, EN 61010-1, EN 61010-2-201, cULus 61010-1, cULus 61010-2-201, DNV |
Commercial data
| PU (SPU) | 1 pcs |
| Packaging type | Box |
| Country of origin | CN |
| GTIN | 4066966241730 |
| Customs tariff number | 85044083900 |
Product Classification
| UNSPSC | 39121004 |
| ETIM 9.0 | EC002540 |
| ETIM 10.0 | EC002540 |
| ECCN | NO US CLASSIFICATION |
Environmental Product Compliance
| RoHS Compliance Status | Compliant,No Exemption |
