Siemens

Siemens 3NJ4183-3BF01

Fuse switch disconnector 3-pole switchable

MPN: 3NJ4183-3BF01

Price and lead time confirmed within 1 business day

Request a Quote

1We check stock, condition and lead time
2You get a written quote by email
3Approve it and we ship — in-stock parts within 1 business day

12-month warranty (new) · 3-month (used/refurbished)
30-day returns, no restocking fee on unused parts
100% positive eBay feedback
Ships via

Have spare Siemens parts? We buy surplus →

What is the Siemens 3NJ4183-3BF01?

fuse switch disconnector 3-pole switchable, for protection of transformers on the secondary side up to 630 kVA for LV HRC fuses GTR 910 A max., 400 V AC, and NH3 disconnecting blade up to 1250 A

Specifications

Model

product brand name	SENTRON
product designation	Fuse switch disconnectors
design of the product	in in-line design
type of switching contact double breaking switching contact	No
design of the auxiliary release	Without
design of the safety monitoring	Without
design of the load switch strip form	Yes

General technical data

number of poles	3
number of poles note	3-pole switchable
type of device	For busbar system 185 mm
size of fuse link	NH3
fuse system	LV HRC fuse

Voltage

insulation voltage rated value	500 V
operational current — at AC-21 B at 400 V rated value	910 A
operational current — at AC-21 B at 500 V rated value	910 A
operational current — at AC-21 B at 690 V rated value	910 A
operational current — at AC-23 B at 400 V rated value	910 A
operating voltage — at AC rated value	400 V

Protection class

protection class IP on the front

IP30

Dissipation

power loss [W] — for rated value of the current at AC in hot operating state per pole	51.7 W
power loss [W] — maximum	155 W

Main circuit

operational current — rated value	910 A
operational current — with capacitive load at 400 V rated value	500 A
operational current — with capacitive load at 500 V rated value	380 A

Suitability

suitability for operation	Transformer protection
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	No

Product details

product component — voltage trigger	No
product component — undervoltage release	No
product component — undervoltage release with leading contact	No

Short circuit

conditional short-circuit current (Iq) — at AC-21 B at 400 V rated value	50 kA
conditional short-circuit current (Iq) — at AC-21 B at 500 V rated value	50 kA
conditional short-circuit current (Iq) — at AC-21 B at 690 V rated value	50 kA
conditional short-circuit current (Iq) — at AC-22 B at 400 V rated value	50 kA
conditional short-circuit current (Iq) — at AC-22 B at 500 V rated value	50 kA
conditional short-circuit current (Iq) — at AC-22 B at 690 V rated value	50 kA
conditional short-circuit current (Iq) — at AC-23 B at 400 V rated value	50 kA
conditional short-circuit current (Iq) — at AC-23 B at 500 V rated value	50 kA
conditional short-circuit current (Iq) — at AC-23 B at 690 V rated value	50 kA

Connections

arrangement of electrical connectors for main current circuit	Flat terminal
type of electrical connection for main current circuit	busbar connection

Mechanical Design

height	662 mm
width	100 mm
depth	195 mm
fastening method	Flachanschluss, 2 x M 12
mounting position	vertical, horizontal
busbar center-to-center spacing	185 mm
busbar center-to-center spacing — 40 mm	No
busbar center-to-center spacing — 50 mm	No
busbar center-to-center spacing — 60 mm	No
busbar center-to-center spacing — 100 mm	No
busbar center-to-center spacing — 185 mm	Yes
Net Weight	12.52 kg

Environmental conditions

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

Downloads & documentation

Official documents from Siemens, downloaded directly from the manufacturer.

Data sheets & manuals

Product data sheet 3NJ4183-3BF01PDF

3NJ4183-3BF01: frequently asked questions

When can 3NJ4183-3BF01 be shipped?

3NJ4183-3BF01 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 3NJ4183-3BF01 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 3NJ4183-3BF01 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 3NJ4183-3BF01, subject to availability and destination.