Wago 855-951/250-000 Data Sheet
Data sheet | Item number:855-951/250-000
Current and voltage tap up to 95 mm²; Primary rated current: 250 A;
Secondary rated current: 1 A; Rated power: 0.2 VA; Accuracy class: 0.5;
fused
Item description
Short description:
WAGO’s current and voltage tap for 95 mm² (950 kcmil) high-current through terminal blocks provides the ideal basis for successful energy
management, because current and voltage are required wherever electrical power is measured.
A combination of current transformer and voltage tap, this solution can be quickly and easily mounted into the jumper slot of WAGO’s 95 mm² (4/0
AWG) high-current through terminal block.
An integrated fuse reliably protects downstream energy meters. An integrated current transformer (conversion ratio: 250 A/1 A) allows precise
current measurement per EN 61869-2 (accuracy class: 0.5).
The current output connectors are marked with S1 (black) and S2 (red). Both termination and removal of fine-stranded conductors is performed via
push-buttons. The 5-pole configuration (2 x S1 and 3 x S2) provides the following advantages:
Current transformer (S1 and S2) can be short circuited via jumper (2000-402)
Direct ‘Y’ point jumper on current transformer
The voltage is connected using a redundant terminal block.
Additionally, the current and voltage tap can be marked either using continuous marking strips or via WMB Multi Marking System.
Features:
Power data can be directly tapped into the power supply
Easy installation – simply insert the tap into the jumper slot of the 95 mm² (4/0 AWG) high-current through terminal block
Integrated current transformer (250 A/1 A)
Accuracy class: 0.5
Fuse-protected voltage path
Note:
Suitable for 2-conductor through terminal blocks for DIN-rail mounting (285-195; 285-194)
Suitable for 2-conductor through terminal blocks with mounting flanges (285-181; 285-184)
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Data sheet | Item number:855-951/250-000
Spare fuse: SIBA Fuse, Item No. 7008913.2
Data
Technical Data
Intput – current transformer
Primary rated current 250A
Rated continuous thermal current I
cth
250 A
Rated short-time thermal current I
th
15 kA / 1 s
Rated surge current I
dyn
37.5 kA
Rated frequency 50 … 60Hz
Output – Current transformer
Highest voltage for equipment U
m
720 V AC
rms
Secondary rated current 1 A
Rated power S
r
0.2 VA
Output – Voltage tap
Rated voltage AC 400V
Fuse (voltage path) 2 A; 450 V; F; 70 kA; 5 x 25 mm
Measurement error
Accuracy class 0.5
Safety and protection:
Highest voltage for equipment U
m
AC 720V
rms
Test voltage AC 3kV;50Hz;1min
Overvoltage category III
Pollution degree 2
Protection class IP20
Connection data
Connection type (1) Current output
Connection technology
Push-in CAGE CLAMP
®
WAGO terminal WAGO 250 Series
Solid conductor 0.2 … 1.5mm²/ 24 … 16AWG
Fine-stranded conductor 0.2 … 1.5mm²/ 24 … 16AWG
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Data sheet | Item number:855-951/250-000
Strip length 8.5 … 9.5mm/ 0.33 … 0.37inch
Connection type (2) Voltage output
Connection technology 2
Push-in CAGE CLAMP
®
WAGO terminal 2 WAGO 2624 Series
Solid conductor (2) 0.2 … 6mm²/ 24 … 10AWG
Strip length (2) 10 … 12mm/ 0.39 … 0.47inch
Feedthrough for measurement conductor Ø ≤ 16 mm
Geometrical Data
Width 25mm/ 0.984inch
Height 73mm/ 2.874inch
Depth 58mm/ 2.283inch
Mechanical data
Type of mounting via jumper slot of the 2-conductor high-current through terminal
block
Material Data
Flammability class per UL94 V2
Housing material PA 66
Weight 98 g
Environmental Requirements
Pollution degree 2
Surrounding air (operating) temperature -25 … 70°C
Surrounding air (storage) temperature -25 … 70°C
Relative humidity 5 … 85% (no condensation)
Max. operating altitude 2000 m
Standards and specifications
Conformity marking 1
Standards/specifications EN 61869-2; EN 60947-7-3
Commercial data
Country of origin NL
GTIN 4055143556354
Customs Tariff No. 85043180888
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