Available on request
Electronic circuit breaker; 1-channel; 24 VDC input voltage; adjustable 0.5 … 4 A; Signal contact
MPN: 787-3861/004-020 · Brand: Wago
Price on request
Request a Quote
12-month warranty (new) · 3-month (used/refurbished)
30-day returns, no restocking fee on unused parts
Ships via
Quick facts
| Availability | Confirmed on request |
| Category | Protective Devices and Protective Electronics |
| Lifecycle | active |
| Warranty | 12-month (new) · 3-month (used/refurbished) |
Shipping & availability
When can 787-3861/004-020 be shipped?
787-3861/004-020 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 787-3861/004-020 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 787-3861/004-020 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 787-3861/004-020, subject to availability and destination.
<p><b>Features:</b></p><ul><li>Space-saving ECB with one channel</li><li>Reliably and safely trips in the event of an overload and short circuit on the secondary side</li><li>Switch-on capacity > 50,000 μF</li><li>Enables the use of an economical, standard power supply</li><li>Minimizes wiring via two voltage outputs and maximizes commoning options on both input and output sides (e.g., commoning of the output voltage on 857 and 2857 Series devices)</li><li>Status signal – adjustable as single or group message</li><li>Reset, switch on/off via remote input or local switch</li><li>Prevents power supply overload due to total inrush current thanks to time-delayed switching on during interconnected operation</li></ul>
Specifications
Notes
| Note | The device is designed for use in SELV circuits., Depending on the output current, please use the approved minimum conductor cross-sections., The device is designed for use in SELV circuits., Depending on the output current, please use the approved minimum conductor cross-sections: 26 AWG (0.5 A); 24 AWG (1 A / 1.5 A); 22 AWG (2 A / 2.5 A); 20 AWG (3 A / 3.5 A / 4 A) |
Technical data - Input
| Nominal input voltage U<sub>i nom</sub> | 24 VDC |
| Input voltage range | 18 … 30 VDC |
Technical data - Output
| Total number of channels (module) | 1 |
| Nominal output voltage U<sub>o nom</sub> | 1 x 24 VDC |
| Output voltage range | 18 … 30 VDC (Ue − voltage drop) |
| Voltage drop | ≤ 40 mV (0.5 A); ≤ 80 mV (1 A); ≤ 120 mV (1.5 A); ≤ 160 mV (2 A); ≤ 200 mV (2.5 A); ≤ 240 mV (3 A); ≤ 280 mV (3.5 A); ≤ 320 mV (4 A) |
| Nominal output current I<sub>o nom</sub> | 1 x 0.5 / 1 / 1.5 / 2 / 2.5 / 3 / 3.5 / 4 A (adjustable) |
| Default setting | DC 0.5 A; switched off |
| Trip time | 10 ms … 90 s (load-dependent) |
| Switch-on capacity | > 50000 µF (see instruction manual) |
| Switch-on behavior | Time-delayed channel switching (load-dependent, min. 0 ms / max. 500 ms) |
| Current limitation | No |
| Switch-on threshold | DC 20.3 V |
Technical data - Signaling and communication
| Signaling | 1 x Signal output (18 … 30 VDC, max. 0.015 A), default setting: tripped, 1 x Status LED (green/yellow/red), 1 x Signal output (18 … 30 VDC, max. 0.015 A), Default setting: triggered |
| Operation status indicator | Green LED (channel OK), Red LED (channel switched off) |
| Remote input | 1 x Control input (15 … 30 VDC (active high); 0 … 5 VDC (active low); max. 0.015 A) |
Technical data - Efficiency/power losses
| Power loss P<sub>l</sub> | ≤ 0.4 W (no load) |
| Efficiency (typ.) | 98 % |
Technical data - Circuit protection
| Internal fuse | T 8 A |
Safety and protection
| Isolation voltage (connectors – housing) | 1.5 kVDC |
| Protection class | III |
| Protection type | IP20; per EN 60529 |
| Reverse voltage protection | No |
| Transient suppression (primary) | Suppressor diode (33 V) |
| Parallel operation of single channels | Not permitted |
| Series operation | No |
| MTBF | 807,840 h |
Safety and protection - Insulation coordination (UL)
| Overvoltage category | II |
| Pollution degree | 2 |
Safety and protection - Insulation coordination
| Overvoltage category | II |
| Pollution degree | 2 |
Connection data
| Number of jumper slots | 8 |
Connection data - Connection 1
| Connection technology | Push-in CAGE CLAMP® |
| WAGO connector | WAGO 857 Series |
| Solid conductor | 0.08 … 2.5 mm² / 26 … 14 AWG |
| Fine-stranded conductor | 0.34 … 2.5 mm² / 22 … 14 AWG |
| Strip length | 9 … 10 mm / 0.35 … 0.39 inches |
| Note (conductor cross-section) | Depending on the output current, use the conductor cross-sections tested and approved by UL: 26 … 14 AWG (0.5 A); 24 … 14 AWG (1 A / 1.5 A); 22 … 14 AWG (2 A / 2.5 A); 20 … 14 AWG (3 A / 3.5 A / 4 A) |
Physical data
| Width | 6 mm / 0.236 inches |
| Height | 94 mm / 3.701 inches |
| Depth from upper-edge of DIN-rail | 97.8 mm / 3.85 inches |
Mechanical data
| Mounting type | DIN-35 rail |
Material data
| Fire load | 0.634 MJ |
| Weight | 55.7 g |
Environmental requirements
| Ambient temperature (operation) | -25 … +70 °C |
| Ambient temperature (storage) | -40 … +85 °C |
| Relative humidity | 10 … 95 % (no condensation permissible) |
| Derating | No derating |
| Operating altitude | ≤ 2000 m (a.s.l.) |
Standards and specifications
| Conformity marking | CE; UKCA |
| Standards/specifications | EN 61000-6-2, EN 61000-6-3, UL 61010-2-201, DNV, UL 2367 |
Commercial data
| PU (SPU) | 1 pcs |
| Packaging type | Bag |
| Country of origin | IN |
| Customs tariff number | 85362010900 |
Product Classification
| UNSPSC | 39121634 |
| ETIM 9.0 | EC001440 |
| ETIM 10.0 | EC001440 |
| ECCN | NO US CLASSIFICATION |
Environmental Product Compliance
| CAS-No. | 11120-22-2, 1303-86-2, 1317-36-8, 7439-92-1 |
| REACH Candidate List Substance | Diboron trioxide, Lead, Lead monoxide, Lead silicate |
| RoHS Compliance Status | Compliant,With Exemption |
| RoHS Exemption | 6(c), 7(a), 7(c)-I, 7(c)-II |
| SCIP notification number (Austria) | 182a37ec-835c-4398-8a34-26201cdd647d |
| SCIP notification number (Belgium) | 7be3cd1c-81db-4697-a0e7-4510af4b0fd3 |
| SCIP notification number (Bulgaria) | ace2344b-cece-40e9-838e-5420ff7f06d3 |
| SCIP notification number (Czech Republic) | eb7d500a-09ae-4c68-b0e6-cf5de11bb5a3 |
| SCIP notification number (Denmark) | 2fe76880-4391-4e7f-b43f-312ea576f7ac |
| SCIP notification number (Finland) | 5412f2c7-19e9-475b-820c-724a74597644 |
| SCIP notification number (France) | 1b5214de-93ad-4cba-819d-9eeab6e2f665 |
| SCIP notification number (Germany) | eaba3ebe-87e7-4c03-b934-cf6d6de9d5ad |
| SCIP notification number (Hungary) | b81f3d60-9a87-43f6-9087-58886bf6fc11 |
| SCIP notification number (Italy) | 80f1784f-8ca8-4cda-914f-12cbdee804ee |
| SCIP notification number (Netherlands) | d630cf8b-2fe9-47a8-80dd-96dd379b2c2d |
| SCIP notification number (Poland) | efb9155f-9a6d-451d-9a46-a31631f587ae |
| SCIP notification number (Romania) | a2c30a36-126b-4e67-a159-9409a10010f4 |
| SCIP notification number (Sweden) | 585b6e14-60b3-4a80-b3b2-05e4b69c9b39 |
12-month warrantyon all new stock
3-month warrantyon used & refurbished parts
30-day returnsno restocking fee on unused parts
Global shippingFast, tracked delivery worldwide
