• Siemens SENTRON 3NJ4 Fuse Switch Disconnector Accessories
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Siemens SENTRON 3NJ4 Fuse Switch Disconnector Accessories

Siemens SENTRON 3NJ4 Fuse Switch Disconnector Accessories

Accessories for Siemens SENTRON 3NJ4 in-line fuse switch disconnectors: covers, adapters, terminals, assembly kits, current transformers and spare parts.

Key features

  • Covers, blanking covers, unequipped section covers and lateral masking frame supports
  • Adapters for 185 mm and 60 mm busbar systems, fixing clips and screws
  • Busbar, saddle, prism and box terminal assembly kits
  • Current transformers …/1 A and …/5 A, accuracy class 0.5 / 0.5 calibrated / 1
  • Auxiliary switch mounting kits, grounding kits and NH3 fuses / isolating blades

Specifications

Brand Siemens SENTRON
Series 3NJ4 accessories
Catalog chapter 8 Switch Disconnectors
Product group Fuse switch disconnectors
Suitable for 3NJ4 in-line fuse switch disconnectors
Busbar systems 100 mm and 185 mm c-c spacing
Source Siemens Catalog LV 10 · 2026, p. 726-733
3NJ4912-1DA02 Accessory: Covers | Version: NH00 | Detail: 100 mm, Top and bottom
3NJ4912-1FA01 Accessory: Covers | Version: NH00 | Detail: 185 mm, 100 mm for bottom
3NJ4912-1FA00 Accessory: Covers | Version: NH00 | Detail: 185 mm, 132 mm for top
3NJ4912-1AA01 Accessory: Covers | Version: NH1 … NH3 | Detail: Connection for top and bottom
3NJ4912-1EA00 Accessory: Covers | Version: NH3 | Detail: For double in-line disconnectors
3NJ4912-2CA00 Accessory: Blanking covers | Version: For switchboard cutout | Detail: 299 mm, 50 mm, 100 mm only
3NJ4912-2AA00 Accessory: Blanking covers | Version: For switchboard cutout | Detail: 633 mm, 50 mm, 100 mm only
3NJ4912-2BA00 Accessory: Blanking covers | Version: For switchboard cutout | Detail: 633 mm, 100 mm, 100 mm only
3NJ4912-2DA00 Accessory: Lateral masking frame supports | Version: NH00 … NH3
3NJ4918-0AA00 Accessory: Fixing clips | Version: 1 set = 4 units | Detail: incl. fixing accessories
3NJ4912-3AA00 Accessory: Unequipped section covers | Version: 185 mm | Detail: 50 mm
3NJ4912-3BA01 Accessory: Unequipped section covers | Version: 185 mm | Detail: 100 mm
3NJ4912-3CA00 Accessory: Unequipped section covers | Version: 100 mm | Detail: 50 mm
3NJ4918-0DA02 Accessory: Adapter for 185 mm busbar system | Version: From 100 mm to 185 mm | Detail: Adapters with screw fixing
3NJ5930-3BB Accessory: Adapter for 185 mm busbar system | Version: From 185 mm to 185 mm | Detail: Adapters with screw fixing
3NJ4918-0DB02 Accessory: Adapter for 185 mm busbar system | Version: From 100 mm to 185 mm busbar system | Detail: Adapters with clamp fixing
3NJ4918-0EA00 Accessory: Adapter for 60 mm busbar system | Version: From 100 mm to 60 mm busbar system | Detail: Adapters with screw fixing
3NJ4918-0DC02 Accessory: Fixing screws | Version: 1 set = 3 units
3NJ5974-0AB Accessory: Busbar supports | Version: For 100 and 185 mm busbar c-c spacing
3NJ4910-1AA00 Accessory: Grounding kits | Version: With connecting cable 25 mm²
3NJ4911-3AA00 Accessory: Busbar terminals | Version: Standard
3NJ4911-3BA01 Accessory: Busbar terminals | Version: Standard
3NJ4911-4AA00 Accessory: Saddle terminals | Version: Cu 1.5 … 70 mm²
3NJ4911-1AA00 Accessory: Prism terminal assembly kits | Version: Cu 10 … 70 mm²
3NJ4911-2BQ00 Accessory: Box terminal assembly kits | Version: Cu 70 … 240 mm²
3NJ4913-1AA01 Accessory: Auxiliary switch mounting kits | Version: For NH00 … NH3 with connecting cables | Detail: 1 CO
3NJ4918-1AA00 Accessory: Mounting hook | Version: Standard
3NJ4915-1BA00 Accessory: Distance compensation | Version: For NH00
3NJ4915-2BA00 Accessory: Distance compensation | Version: For fuse switch disc. | Detail: with integratable current transformers | Detail 2: if no current transformer is built in
3NJ4915-1CA00 Accessory: Terminal strips | Version: For NH00
3NJ4915-2CA00 Accessory: Terminal strips | Version: For NH1 … NH3
3NJ4911-5AA00 Accessory: Busbar conn. assy kits for NH2 and NH3 | Version: M12 | Detail: 2 × 240 mm²
3NJ4911-5BA00 Accessory: Busbar conn. assy kits for NH2 and NH3 | Version: M12 | Detail: 2 × 300 mm²/3 × 120 mm²
3NJ4911-5CA00 Accessory: Busbar conn. assy kits for NH2 and NH3 | Version: M16 | Detail: 1 × 400 mm²
3NJ4911-6AA00 Accessory: Busbar conn. assy kits for NH2 and NH3 | Version: For double in-line disconnectors | Detail: 3 × 300 mm²/4 × 185 mm²
3NJ4911-6BA00 Accessory: Busbar conn. assy kits for NH2 and NH3 | Version: For double in-line disconnectors | Detail: 4 × 240 mm²
3NJ4911-6CA00 Accessory: Coupling of operating handles | Version: Mechanical coupling of operating handles
3NJ4914-8AA00 Accessory: Fuses NH3 | Version: For protection of transformers, 630 kVA | Detail: 910 A, 400 V, operational class gTr
3NJ4914-8BA00 Accessory: Isolating blades NH3 | Version: 1250 A
3NJ4915-1EA10 Accessory: Current transformers …/1 A | Version: 100/1 A | Detail: 0.5, 1.5 VA
3NJ4915-1EA20 Accessory: Current transformers …/1 A | Version: 100/1 A | Detail: 1, 2.0 VA
3NJ4915-1FA10 Accessory: Current transformers …/1 A | Version: 150/1 A | Detail: 0.5, 2.5 VA
3NJ4915-1FA11 Accessory: Current transformers …/1 A | Version: 150/1 A | Detail: 0.5 calibrated, 2.5 VA
3NJ4915-1FA20 Accessory: Current transformers …/1 A | Version: 150/1 A | Detail: 1, 3.0 VA
3NJ4915-2DA20 Accessory: Current transformers …/1 A | Version: 75/1 A | Detail: 1, 1.5 VA
3NJ4915-2EA10 Accessory: Current transformers …/1 A | Version: 100/1 A | Detail: 0.5, 1.5 VA
3NJ4915-2EA20 Accessory: Current transformers …/1 A | Version: 100/1 A | Detail: 1, 2.0 VA
3NJ4915-2FA20 Accessory: Current transformers …/1 A | Version: 150/1 A | Detail: 1, 2.5 VA
3NJ4915-2GA10 Accessory: Current transformers …/1 A | Version: 250/1 A | Detail: 0.5, 2.5 VA
3NJ4915-2GA11 Accessory: Current transformers …/1 A | Version: 250/1 A | Detail: 0.5 calibrated, 2.5 VA
3NJ4915-2GA20 Accessory: Current transformers …/1 A | Version: 250/1 A | Detail: 1, 5.0 VA
3NJ4915-2HA10 Accessory: Current transformers …/1 A | Version: 400/1 A | Detail: 0.5, 2.5 VA
3NJ4915-2HA11 Accessory: Current transformers …/1 A | Version: 400/1 A | Detail: 0.5 calibrated, 2.5 VA
3NJ4915-2HA20 Accessory: Current transformers …/1 A | Version: 400/1 A | Detail: 1, 5.0 VA
3NJ4915-2JA10 Accessory: Current transformers …/1 A | Version: 500/1 A | Detail: 0.5, 2.5 VA
3NJ4915-2JA20 Accessory: Current transformers …/1 A | Version: 500/1 A | Detail: 1, 5.0 VA
3NJ4915-2KA10 Accessory: Current transformers …/1 A | Version: 600/1 A | Detail: 0.5, 2.5 VA
3NJ4915-2KA11 Accessory: Current transformers …/1 A | Version: 600/1 A | Detail: 0.5 calibrated, 2.5 VA
3NJ4915-2KA20 Accessory: Current transformers …/1 A | Version: 600/1 A | Detail: 1, 5.0 VA
3NJ4915-1EB10 Accessory: Current transformers …/5 A | Version: 100/5 A | Detail: 0.5, 1.0 VA
3NJ4915-1EB20 Accessory: Current transformers …/5 A | Version: 100/5 A | Detail: 1, 1.5 VA
3NJ4915-1FB10 Accessory: Current transformers …/5 A | Version: 150/5 A | Detail: 0.5, 1.5 VA
3NJ4915-1FB11 Accessory: Current transformers …/5 A | Version: 150/5 A | Detail: 0.5 calibrated, 1.5 VA
3NJ4915-1FB20 Accessory: Current transformers …/5 A | Version: 150/5 A | Detail: 1, 2.5 VA
3NJ4915-2DB20 Accessory: Current transformers …/5 A | Version: 75/5 A | Detail: 1, 1.5 VA
3NJ4915-2EB10 Accessory: Current transformers …/5 A | Version: 100/5 A | Detail: 0.5, 1.0 VA
3NJ4915-2EB20 Accessory: Current transformers …/5 A | Version: 100/5 A | Detail: 1, 2.0 VA
3NJ4915-2FB10 Accessory: Current transformers …/5 A | Version: 150/5 A | Detail: 0.5, 1.5 VA
3NJ4915-2FB20 Accessory: Current transformers …/5 A | Version: 150/5 A | Detail: 1, 2.5 VA
3NJ4915-2GB10 Accessory: Current transformers …/5 A | Version: 250/5 A | Detail: 0.5, 2.5 VA
3NJ4915-2GB11 Accessory: Current transformers …/5 A | Version: 250/5 A | Detail: 0.5 calibrated, 2.5 VA
3NJ4915-2GB20 Accessory: Current transformers …/5 A | Version: 250/5 A | Detail: 1, 3.75 VA
3NJ4915-2HB10 Accessory: Current transformers …/5 A | Version: 400/5 A | Detail: 0.5, 2.5 VA
3NJ4915-2HB11 Accessory: Current transformers …/5 A | Version: 400/5 A | Detail: 0.5 calibrated, 2.5 VA
3NJ4915-2HB20 Accessory: Current transformers …/5 A | Version: 400/5 A | Detail: 1, 3.75 VA
3NJ4915-2JB10 Accessory: Current transformers …/5 A | Version: 500/5 A | Detail: 0.5, 2.5 VA
3NJ4915-2JB20 Accessory: Current transformers …/5 A | Version: 500/5 A | Detail: 1, 5.0 VA
3NJ4915-2KB10 Accessory: Current transformers …/5 A | Version: 600/5 A | Detail: 0.5, 2.5 VA
3NJ4915-2KB11 Accessory: Current transformers …/5 A | Version: 600/5 A | Detail: 0.5 calibrated, 2.5 VA
3NJ4915-2KB20 Accessory: Current transformers …/5 A | Version: 600/5 A | Detail: 1, 5.0 VA
AccessoriesSiemens
80 product codes available in this family
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Siemens SENTRON 3NJ4 Fuse Switch Disconnector Accessories

Brand Siemens·Accessories

Available part numbers (80)

3NJ4912-1DA02, 3NJ4912-1FA01, 3NJ4912-1FA00, 3NJ4912-1AA01, 3NJ4912-1EA00, 3NJ4912-2CA00, 3NJ4912-2AA00, 3NJ4912-2BA00, 3NJ4912-2DA00, 3NJ4918-0AA00 + 70 more — see full table ↓

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Product codeSpec
3NJ4912-1DA02Accessory: Covers | Version: NH00 | Detail: 100 mm, Top and bottom
3NJ4912-1FA01Accessory: Covers | Version: NH00 | Detail: 185 mm, 100 mm for bottom
3NJ4912-1FA00Accessory: Covers | Version: NH00 | Detail: 185 mm, 132 mm for top
3NJ4912-1AA01Accessory: Covers | Version: NH1 … NH3 | Detail: Connection for top and bottom
3NJ4912-1EA00Accessory: Covers | Version: NH3 | Detail: For double in-line disconnectors
3NJ4912-2CA00Accessory: Blanking covers | Version: For switchboard cutout | Detail: 299 mm, 50 mm, 100 mm only
3NJ4912-2AA00Accessory: Blanking covers | Version: For switchboard cutout | Detail: 633 mm, 50 mm, 100 mm only
3NJ4912-2BA00Accessory: Blanking covers | Version: For switchboard cutout | Detail: 633 mm, 100 mm, 100 mm only
3NJ4912-2DA00Accessory: Lateral masking frame supports | Version: NH00 … NH3
3NJ4918-0AA00Accessory: Fixing clips | Version: 1 set = 4 units | Detail: incl. fixing accessories
3NJ4912-3AA00Accessory: Unequipped section covers | Version: 185 mm | Detail: 50 mm
3NJ4912-3BA01Accessory: Unequipped section covers | Version: 185 mm | Detail: 100 mm
3NJ4912-3CA00Accessory: Unequipped section covers | Version: 100 mm | Detail: 50 mm
3NJ4918-0DA02Accessory: Adapter for 185 mm busbar system | Version: From 100 mm to 185 mm | Detail: Adapters with screw fixing
3NJ5930-3BBAccessory: Adapter for 185 mm busbar system | Version: From 185 mm to 185 mm | Detail: Adapters with screw fixing
3NJ4918-0DB02Accessory: Adapter for 185 mm busbar system | Version: From 100 mm to 185 mm busbar system | Detail: Adapters with clamp fixing
3NJ4918-0EA00Accessory: Adapter for 60 mm busbar system | Version: From 100 mm to 60 mm busbar system | Detail: Adapters with screw fixing
3NJ4918-0DC02Accessory: Fixing screws | Version: 1 set = 3 units
3NJ5974-0ABAccessory: Busbar supports | Version: For 100 and 185 mm busbar c-c spacing
3NJ4910-1AA00Accessory: Grounding kits | Version: With connecting cable 25 mm²
3NJ4911-3AA00Accessory: Busbar terminals | Version: Standard
3NJ4911-3BA01Accessory: Busbar terminals | Version: Standard
3NJ4911-4AA00Accessory: Saddle terminals | Version: Cu 1.5 … 70 mm²
3NJ4911-1AA00Accessory: Prism terminal assembly kits | Version: Cu 10 … 70 mm²
3NJ4911-2BQ00Accessory: Box terminal assembly kits | Version: Cu 70 … 240 mm²
3NJ4913-1AA01Accessory: Auxiliary switch mounting kits | Version: For NH00 … NH3 with connecting cables | Detail: 1 CO
3NJ4918-1AA00Accessory: Mounting hook | Version: Standard
3NJ4915-1BA00Accessory: Distance compensation | Version: For NH00
3NJ4915-2BA00Accessory: Distance compensation | Version: For fuse switch disc. | Detail: with integratable current transformers | Detail 2: if no current transformer is built in
3NJ4915-1CA00Accessory: Terminal strips | Version: For NH00
3NJ4915-2CA00Accessory: Terminal strips | Version: For NH1 … NH3
3NJ4911-5AA00Accessory: Busbar conn. assy kits for NH2 and NH3 | Version: M12 | Detail: 2 × 240 mm²
3NJ4911-5BA00Accessory: Busbar conn. assy kits for NH2 and NH3 | Version: M12 | Detail: 2 × 300 mm²/3 × 120 mm²
3NJ4911-5CA00Accessory: Busbar conn. assy kits for NH2 and NH3 | Version: M16 | Detail: 1 × 400 mm²
3NJ4911-6AA00Accessory: Busbar conn. assy kits for NH2 and NH3 | Version: For double in-line disconnectors | Detail: 3 × 300 mm²/4 × 185 mm²
3NJ4911-6BA00Accessory: Busbar conn. assy kits for NH2 and NH3 | Version: For double in-line disconnectors | Detail: 4 × 240 mm²
3NJ4911-6CA00Accessory: Coupling of operating handles | Version: Mechanical coupling of operating handles
3NJ4914-8AA00Accessory: Fuses NH3 | Version: For protection of transformers, 630 kVA | Detail: 910 A, 400 V, operational class gTr
3NJ4914-8BA00Accessory: Isolating blades NH3 | Version: 1250 A
3NJ4915-1EA10Accessory: Current transformers …/1 A | Version: 100/1 A | Detail: 0.5, 1.5 VA
3NJ4915-1EA20Accessory: Current transformers …/1 A | Version: 100/1 A | Detail: 1, 2.0 VA
3NJ4915-1FA10Accessory: Current transformers …/1 A | Version: 150/1 A | Detail: 0.5, 2.5 VA
3NJ4915-1FA11Accessory: Current transformers …/1 A | Version: 150/1 A | Detail: 0.5 calibrated, 2.5 VA
3NJ4915-1FA20Accessory: Current transformers …/1 A | Version: 150/1 A | Detail: 1, 3.0 VA
3NJ4915-2DA20Accessory: Current transformers …/1 A | Version: 75/1 A | Detail: 1, 1.5 VA
3NJ4915-2EA10Accessory: Current transformers …/1 A | Version: 100/1 A | Detail: 0.5, 1.5 VA
3NJ4915-2EA20Accessory: Current transformers …/1 A | Version: 100/1 A | Detail: 1, 2.0 VA
3NJ4915-2FA20Accessory: Current transformers …/1 A | Version: 150/1 A | Detail: 1, 2.5 VA
3NJ4915-2GA10Accessory: Current transformers …/1 A | Version: 250/1 A | Detail: 0.5, 2.5 VA
3NJ4915-2GA11Accessory: Current transformers …/1 A | Version: 250/1 A | Detail: 0.5 calibrated, 2.5 VA
3NJ4915-2GA20Accessory: Current transformers …/1 A | Version: 250/1 A | Detail: 1, 5.0 VA
3NJ4915-2HA10Accessory: Current transformers …/1 A | Version: 400/1 A | Detail: 0.5, 2.5 VA
3NJ4915-2HA11Accessory: Current transformers …/1 A | Version: 400/1 A | Detail: 0.5 calibrated, 2.5 VA
3NJ4915-2HA20Accessory: Current transformers …/1 A | Version: 400/1 A | Detail: 1, 5.0 VA
3NJ4915-2JA10Accessory: Current transformers …/1 A | Version: 500/1 A | Detail: 0.5, 2.5 VA
3NJ4915-2JA20Accessory: Current transformers …/1 A | Version: 500/1 A | Detail: 1, 5.0 VA
3NJ4915-2KA10Accessory: Current transformers …/1 A | Version: 600/1 A | Detail: 0.5, 2.5 VA
3NJ4915-2KA11Accessory: Current transformers …/1 A | Version: 600/1 A | Detail: 0.5 calibrated, 2.5 VA
3NJ4915-2KA20Accessory: Current transformers …/1 A | Version: 600/1 A | Detail: 1, 5.0 VA
3NJ4915-1EB10Accessory: Current transformers …/5 A | Version: 100/5 A | Detail: 0.5, 1.0 VA
3NJ4915-1EB20Accessory: Current transformers …/5 A | Version: 100/5 A | Detail: 1, 1.5 VA
3NJ4915-1FB10Accessory: Current transformers …/5 A | Version: 150/5 A | Detail: 0.5, 1.5 VA
3NJ4915-1FB11Accessory: Current transformers …/5 A | Version: 150/5 A | Detail: 0.5 calibrated, 1.5 VA
3NJ4915-1FB20Accessory: Current transformers …/5 A | Version: 150/5 A | Detail: 1, 2.5 VA
3NJ4915-2DB20Accessory: Current transformers …/5 A | Version: 75/5 A | Detail: 1, 1.5 VA
3NJ4915-2EB10Accessory: Current transformers …/5 A | Version: 100/5 A | Detail: 0.5, 1.0 VA
3NJ4915-2EB20Accessory: Current transformers …/5 A | Version: 100/5 A | Detail: 1, 2.0 VA
3NJ4915-2FB10Accessory: Current transformers …/5 A | Version: 150/5 A | Detail: 0.5, 1.5 VA
3NJ4915-2FB20Accessory: Current transformers …/5 A | Version: 150/5 A | Detail: 1, 2.5 VA
3NJ4915-2GB10Accessory: Current transformers …/5 A | Version: 250/5 A | Detail: 0.5, 2.5 VA
3NJ4915-2GB11Accessory: Current transformers …/5 A | Version: 250/5 A | Detail: 0.5 calibrated, 2.5 VA
3NJ4915-2GB20Accessory: Current transformers …/5 A | Version: 250/5 A | Detail: 1, 3.75 VA
3NJ4915-2HB10Accessory: Current transformers …/5 A | Version: 400/5 A | Detail: 0.5, 2.5 VA
3NJ4915-2HB11Accessory: Current transformers …/5 A | Version: 400/5 A | Detail: 0.5 calibrated, 2.5 VA
3NJ4915-2HB20Accessory: Current transformers …/5 A | Version: 400/5 A | Detail: 1, 3.75 VA
3NJ4915-2JB10Accessory: Current transformers …/5 A | Version: 500/5 A | Detail: 0.5, 2.5 VA
3NJ4915-2JB20Accessory: Current transformers …/5 A | Version: 500/5 A | Detail: 1, 5.0 VA
3NJ4915-2KB10Accessory: Current transformers …/5 A | Version: 600/5 A | Detail: 0.5, 2.5 VA
3NJ4915-2KB11Accessory: Current transformers …/5 A | Version: 600/5 A | Detail: 0.5 calibrated, 2.5 VA
3NJ4915-2KB20Accessory: Current transformers …/5 A | Version: 600/5 A | Detail: 1, 5.0 VA

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