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Siemens 3NJ4123-3CF01
In-line fuse switch disconnector 3-pole selectable, Sz. 1 I=250 A, U=690 V Flat terminal M10
- MPN
- 3NJ4123-3CF01
- Category
- 3-pole, Switchable
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What is the Siemens 3NJ4123-3CF01?
In-line fuse switch disconnector 3-pole selectable, Sz. 1 I=250 A, U=690 V Flat terminal M10, with electronic fuse Monitoring EFM
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 | Electronic |
| 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 | NH1 |
| fuse system | LV HRC fuse |
Voltage
| insulation voltage rated value | 1 000 V |
| 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-23 B at 400 V rated value | 250 A |
| operating voltage — at AC rated value | 690 V |
| operating voltage — at DC rated value | 440 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 | 7.7 W |
| power loss [W] — maximum | 23 W |
Main circuit
| operational current — rated value | 250 A |
| operational current — with capacitive load at 400 V rated value | 144 A |
| operational current — with capacitive load at 500 V rated value | 110 A |
Suitability
| suitability for operation | System 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 | 110 kA |
| conditional short-circuit current (Iq) — at AC-21 B at 500 V rated value | 110 kA |
| conditional short-circuit current (Iq) — at AC-21 B at 690 V rated value | 110 kA |
| conditional short-circuit current (Iq) — at AC-22 B at 400 V rated value | 110 kA |
| conditional short-circuit current (Iq) — at AC-22 B at 500 V rated value | 110 kA |
| conditional short-circuit current (Iq) — at AC-22 B at 690 V rated value | 110 kA |
| conditional short-circuit current (Iq) — at AC-23 B at 400 V rated value | 110 kA |
| conditional short-circuit current (Iq) — at AC-23 B at 500 V rated value | 110 kA |
| conditional short-circuit current (Iq) — at AC-23 B at 690 V rated value | 110 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, M 10 |
| 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 | 6.122 kg |
Environmental conditions
| ambient temperature during operation — minimum | -25 °C |
| ambient temperature during operation — maximum | 55 °C |
No matching specifications
Downloads & documentation
Official documents from Siemens, downloaded directly from the manufacturer.
Data sheets & manuals
3NJ4123-3CF01: frequently asked questions
When can 3NJ4123-3CF01 be shipped?
3NJ4123-3CF01 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 3NJ4123-3CF01 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 3NJ4123-3CF01 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 3NJ4123-3CF01, subject to availability and destination.
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