Item no. 787-2861/050-000

Electronic circuit breaker; 1-channel; 24 VDC input voltage; 0.5 A; Signal contact

Item no. 787-2861/050-000
  • Space-saving ECB with one channel
  • Reliably and safely trips in the event of an overload and short circuit on the secondary side
  • Switch-on capacity > 50,000 μF
  • Enables the use of an economical, standard power supply
  • 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)
  • Status signal – adjustable as single or group message
  • Reset, switch on/off via remote input or local switch
  • Prevents power supply overload due to total inrush current thanks to time-delayed switching on during interconnected operation

Product details

Technical data
Nominal input voltage Ui nom DC 24 V
Input voltage range DC 18 … 30 V
Total number of channels (module) 1
Nominal output voltage Uo nom 1 x DC 24 V
Output voltage range DC 18 … 30 V (Ue − voltage drop)
Voltage drop ≤ 50 mV
Nominal output current Io nom 1 x 0.5 A (Fixed setting)
Switch-on capacity > 50000 µF per channel
Switch-on behavior Time-delayed channel switching (load-dependent, min. 170 ms/max. 500 ms)
Active current limitation no
Signaling and communication
Signaling 1 x Status LED (green/yellow/red/blue)
1 x Control input
1 x active signal output (Ui, max. 4 mA)
Operation status indicator Green LED (channel OK)
Red LED (tripped channel)
Remote input 18 … 30 VDC signal, switches on/off and resets the channel
Efficiency/power losses
Power loss Pl ≤ 0.36 W (No load)
Efficiency (typ.) 99 %
Circuit protection
Internal fuse T 15 A
Safety and protection
Isolation voltage (connectors – housing) DC 0.5 kV
Protection class III
Protection type IP20 (per EN 60529)
Reverse voltage protection No
Pollution degree 2
Transient suppression (primary) Suppressor diode (33 V)
Parallel operation of single channels Not permitted
Series operation No
MTBF 1,263,074 h (per MIL-HDBK-217F2)
Connection data
Number of jumper slots 8
Connection technology Push-in CAGE CLAMP®
WAGO Connector WAGO 857 Series
Solid conductor 0.08 … 2.5 mm² / 28 … 14 AWG
Fine-stranded conductor 0.34 … 2.5 mm² / 22 … 14 AWG
Strip length 9 … 10 mm / 0.35 … 0.39 inch
Physical data
Width 6 mm / 0.236 inch
Height from upper-edge of DIN-rail 97.8 mm / 3.85 inch
Depth 94 mm / 3.701 inch
Mechanical data
Mounting type DIN-35 rail
Material data
Fire load 0.405 MJ
Weight 53.6 g
Environmental requirements
Surrounding air temperature (operation) -25 … 70 °C (Device starts at −40 °C (type-tested))
Surrounding air temperature (storage) -40 … 85 °C
Relative humidity 10 … 95 % (no condensation permissible)
Derating kein Derating
Pollution degree 2
Standards and specifications
Conformity marking CE
Standards/Specifications EN 61000-6-2; EN 61000-6-3; UL 61010-2-201; DNV GL* (*pending)
Commercial data
Packaging type bag
Country of origin DE
GTIN 4055143951289
Customs tariff number 85363010900
Approvals / Certificates
Ship Approvals
Additional Approval Text
Certificate name
Approval: DNV GL
Det Norske Veritas, Germanischer Lloyd
Additional Approval Text DNVGL-CG-339,Dec.2019
Certificate name: TAA00001D1
Additional Approval Text
Certificate name
Approval: UL
Underwriters Laboratories Inc. (ORDINARY LOCATIONS)
Additional Approval Text UL 2367,UL 61010-2-201
Certificate name: E175199 Vol.3 Sec.2 Series 0787 ECB
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