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Siemens 3NP1143-1BC23

SENTRON, Fuse switch disconnector 3NP1, 3-pole, NH1, 250 A, for Busbar system 8US 60 mm, Box terminal

MPN: 3NP1143-1BC23
Category: SENTRON 3NP1 Fuse Switch Disconnectors up to 630 A

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What is the Siemens 3NP1143-1BC23?

SENTRON, Fuse switch disconnector 3NP1, 3-pole, NH1, 250 A, for Busbar system 8US 60 mm, Box terminal, Fuse monitoring: electronic EFM20, Cover level 32/70 mm

Specifications

Model

product designation	Fuse switch disconnector
busbar design	busbar thickness 5 or 10 mm
design of the safety monitoring	electronic EFM 20
design of the load switch strip form	No
type of the driving mechanism motor drive	No

General technical data

number of poles	3
type of device	For 60 mm 8US busbar system
size of disconnecting link	1 and 0
size of fuse link	NH0, NH1
let-through current with closed switch maximum	32 kA
mechanical service life (operating cycles) typical	1 600
I2t value with closed switch maximum	780 kA²·s
power factor — at AC-22 B	0.65
power factor — at AC-23 B	0.45
power factor — with capacitive load	-0.25
fuse system	LV HRC fuse
degree of pollution	2

Voltage

insulation voltage — rated value	690 V
insulation voltage — with degree of pollution 3 at AC rated value	690 V
insulation voltage — with degree of pollution 2 at AC rated value	1 000 V
power factor at AC-21 B	0.95
surge voltage resistance rated value	8 kV
operational current — at 35 °C rated value	250 A
operational current — at 40 °C rated value	245 A
operational current — at 45 °C rated value	240 A
operational current — at 50 °C rated value	233 A
operational current — at 55 °C rated value	233 A
operational current — at AC-21 B at 240 V rated value	250 A
operational current — at AC-21 B at 400 V rated value	250 A
operational current — at AC-21 B at 500 V rated value	250 A
operational current — at AC-21 B at 690 V rated value	250 A
operational current — at AC-22 B at 240 V rated value	250 A
operational current — at AC-22 B at 400 V rated value	250 A
operational current — at AC-22 B at 500 V rated value	250 A
operational current — at AC-22 B at 690 V rated value	250 A
operational current — at AC-23 B at 690 V rated value	100 A
operational current — at AC-23 B at 500 V rated value	200 A
operational current — at AC-23 B at 400 V rated value	250 A
operational current — at AC-23 B at 240 V rated value	250 A
let-through current with high-speed activation maximum	25 kA
operating voltage — at AC rated value minimum	230 V
operating voltage — at AC rated value maximum	690 V

Protection class

protection class IP — with closed switch with cover or cable lug cover	IP40
protection class IP — with closed switch without cover or cable lug cover	IP30
protection class IP — open	IP20

Dissipation

power loss [W] — with conventional rated thermal current without fuse per pole	8 W
power loss [W] — with conventional rated thermal current without fuse per device	24 W
power loss [W] — for rated value of the current at AC in hot operating state per pole	9.6 W
power loss [W] — of the fuse per fuse maximum	23 W

Main circuit

operational current — rated value	250 A
operational current — with capacitive load at 400 V rated value	72 A
operational current — with capacitive load at 500 V rated value	55 A

Auxiliary circuit

number of CO contacts for auxiliary contacts	0
number of NC contacts for auxiliary contacts	0
number of NO contacts for auxiliary contacts	0

Suitability

suitability for use main switch	No
suitability for use switch disconnector	Yes
suitability for use EMERGENCY OFF switch	No
suitability for use maintenance/repair switch	Yes

Product details

product function phase failure monitoring	Yes
product component — undervoltage release	No
product component — undervoltage release with leading contact	No
product feature sealable	Yes
product extension auxiliary switch	Yes
product extension optional locking capability	Yes
product extension optional voltage trigger	No

Product function

product function overvoltage protection monitoring

Yes

Short circuit

conditional short-circuit current (Iq) — at AC at 240 V with high-speed activation rated value	80 kA
conditional short-circuit current (Iq) — at AC at 500 V with high-speed activation rated value	80 kA
conditional short-circuit current (Iq) — at AC at 690 V with high-speed activation rated value	50 kA
conditional short-circuit current (Iq) — with closed switch at AC at 240 V rated value	120 kA
conditional short-circuit current (Iq) — with closed switch at AC at 500 V rated value	120 kA
conditional short-circuit current (Iq) — with closed switch at AC at 690 V rated value	100 kA

Connections

arrangement of electrical connectors for main current circuit	other
connectable conductor cross-section for main contacts — solid or stranded minimum	70 mm²
connectable conductor cross-section for main contacts — solid or stranded maximum	185 mm²
connectable conductor cross-section for main contacts — finely stranded with core end processing minimum	70 mm²
connectable conductor cross-section for main contacts — finely stranded with core end processing maximum	120 mm²
connectable conductor cross-section for main contacts — stranded minimum	70 mm²
connectable conductor cross-section for main contacts — stranded maximum	185 mm²
tightening torque with screw-type terminals — minimum	10 N·m
tightening torque with screw-type terminals — maximum	10 N·m
type of connectable conductor cross-sections of the laminated conductors maximum	20 x 10 mm
type of connection technology	Box terminal

Mechanical Design

height	306 mm
width	183.7 mm
width of the busbar — minimum	12 mm
width of the busbar — maximum	30 mm
depth	172.5 mm
fastening method	busbar
fastening method — floor mounting	No
fastening method — rail mounting	Yes
mounting position	horizontal/vertical
busbar center-to-center spacing	60 mm
Net Weight	3.711 kg

Environmental conditions

ambient temperature during operation — minimum	-25 °C
ambient temperature during operation — maximum	55 °C
ambient temperature during storage — minimum	-50 °C
ambient temperature during storage — maximum	80 °C

Certificates

reference code according to IEC 81346-2

Downloads & documentation

Official documents from Siemens, downloaded directly from the manufacturer.

Data sheets & manuals

Product data sheet 3NP1143-1BC23PDF

3NP1143-1BC23: frequently asked questions

When can 3NP1143-1BC23 be shipped?

3NP1143-1BC23 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 3NP1143-1BC23 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 3NP1143-1BC23 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 3NP1143-1BC23, subject to availability and destination.