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In-line fuse base

In-line fuse bases are essential components in electrical and industrial automation systems, designed to protect circuits from overcurrent conditions by housing a fuse directly in the cable path. These devices, also known as fuse holders or in-line fuse holders, are typically rated for voltages up to 600V AC/DC and currents ranging from 1A to 30...

In-line fuse bases are essential components in electrical and industrial automation systems, designed to protect circuits from overcurrent conditions by housing a fuse directly in the cable path. These devices, also known as fuse holders or in-line fuse holders, are typically rated for voltages up to 600V AC/DC and currents ranging from 1A to 30A, depending on the fuse type accommodated. They feature a compact, cylindrical or rectangular body made from thermoset or thermoplastic materials, ensuring high dielectric strength and resistance to thermal stress. Common configurations include single-pole (1P) designs with wire leads or screw terminals for easy integration into control panels, junction boxes, or direct cable runs. The fuse base ensures proper contact alignment and secure fuse retention, often with a transparent cover for visual fuse status inspection. These components are critical for safeguarding sensitive equipment like PLCs, sensors, and actuators in automated systems.

In-line fuse bases are widely deployed in industrial automation, building management, and renewable energy sectors. They are installed in control cabinets, distribution boards, and field junction boxes to protect motor control circuits, lighting systems, and power supplies. In photovoltaic installations, they safeguard string combiners and inverters from reverse current faults. Their compact design makes them ideal for tight spaces in conveyor systems, packaging machinery, and HVAC controls. They are also used in transportation applications like railway signaling and electric vehicle charging stations, where reliable overcurrent protection is mandatory.

Key subcategories include standard in-line fuse bases for glass tube fuses (5x20mm and 6.3x32mm), high-current versions for blade fuses (ATO, MINI, MAXI), and specialized models for midget fuses (10x38mm). Common article codes follow patterns like FLB-5x20-1P for a single-pole base for 5x20mm fuses, or FLB-ATO-30A for a 30A blade fuse holder. Other variants include FLB-MINI-20A and FLB-MAXI-40A, with codes often indicating fuse type, amperage, and pole count. These bases are available with or without integrated indicator LEDs for blown fuse detection.

Partnering with Electric Automation Network ensures access to a vast inventory of in-line fuse bases from leading manufacturers, with real-time pricing and technical documentation per article. Our team of specialized engineers provides personalized support for selecting the correct fuse base based on voltage, current, and environmental conditions. We offer express worldwide shipping, ensuring critical components reach your facility within days. Whether for prototyping or large-scale production, our platform simplifies procurement with multilingual interfaces and expert guidance.

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Manufacturer Code Reference Catalog Number Description Delivery Price

3NJ6283-4AA00-0AA0

3NJ6283-4AA00-0AA0

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Switch disconnector with fuses In-line design, pluggable BS B4, 3-pole High switching capacity H Motorized operating mechanism without auxiliary switch without current transformer without ammeter

 		3 View Availability View Price

3NJ5643-0BB00

3NJ5643-0BB00

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In-line fuse switch disconnector 1-pole selectable, gR 4A, I=1250 A Flat terminal M16x 60

Vertical base with 1 pole switchable fuses, size 4A, I=1250A flat connection M16 x 60.

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3NJ6294-2AC00-0AA0

3NJ6294-2AC00-0AA0

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Switch disconnector with fuses In-line design, pluggable BS 3T, 4-pole Standard switching capacity S Motor drive, Fuse monitoring EFM 20 without auxiliary switch without current transformer without ammeter

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3NJ6264-1AA00-0AA0

3NJ6264-1AA00-0AA0

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Switch disconnector with fuses In-line design, pluggable BS 00T, 4-pole Standard switching capacity S manual operation without auxiliary switch without current transformer without ammeter

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3NJ6233-3AC00-0AA0

3NJ6233-3AC00-0AA0

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Switch disconnector with fuses In-line design, pluggable NH3 630 A, 3-pole High switching capacity H Manual operation Fuse monitoring EFM 20 without auxiliary switch without current transformer without ammeter

 		3 View Availability View Price

3NJ6223-3AA00-0AA0

3NJ6223-3AA00-0AA0

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Switch disconnector with fuses In-line design, pluggable NH2 400 A, 3-pole High switching capacity H manual operation without auxiliary switch without current transformer without ammeter

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3NJ6222-4AA00-0AA0

3NJ6222-4AA00-0AA0

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Switch disconnector with fuses In-line design, pluggable NH2 400 A, 2-pole High switching capacity H Motorized operating mechanism without auxiliary switch without current transformer without ammeter

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3NJ6262-3AE00-0AA0

3NJ6262-3AE00-0AA0

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Switch disconnector with fuses In-line design, pluggable BS 00T, 2-pole High switching capacity H manual operation Fuse monitoring EFM 25 without auxiliary switch without current transformer without ammeter

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3NJ6294-1AB00-0AA0

3NJ6294-1AB00-0AA0

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Switch disconnector with fuses In-line design, pluggable BS 3T, 4-pole Standard switching capacity S manual operation Fuse monitoring EFM 10 without auxiliary switch without current transformer without ammeter

 		3 View Availability View Price

3NJ6214-2AB00-0AA0

3NJ6214-2AB00-0AA0

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Switch disconnector with fuses In-line design, pluggable NH1 250 A, 4-pole Standard switching capacity S Motor drive, Fuse monitoring EFM 10 without auxiliary switch without current transformer without ammeter

 		3 View Availability View Price

3NJ6293-4AA00-0AA0

3NJ6293-4AA00-0AA0

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Switch disconnector with fuses In-line design, pluggable BS 3T, 3-pole High switching capacity H Motorized operating mechanism without auxiliary switch without current transformer without ammeter

 		3 View Availability View Price

3NJ6202-3AE00-0AA0

3NJ6202-3AE00-0AA0

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Switch disconnector with fuses In-line design, pluggable NH00 160 A, 2-pole High switching capacity H manual operation Fuse monitoring EFM 25 without auxiliary switch without current transformer without ammeter

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3NJ6203-4AB00-0AA0

3NJ6203-4AB00-0AA0

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Switch disconnector with fuses In-line design, pluggable NH00 160 A, 3-pole High switching capacity H Motor drive, Fuse monitoring EFM 10 without auxiliary switch without current transformer without ammeter

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3NJ4123-3BT01

3NJ4123-3BT01

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In-line fuse switch disconnector 3-pole selectable, Sz. 1 I=250 A, U=690 V Direct connection V terminal new design

VERTICAL BASE WITH SWITCHABLE 3-POLE FUSES, SIZE 1, I=250A, U=690V TERMINALS TO "V" NEW DESIGN.

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3NJ4123-3CF01

3NJ4123-3CF01

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In-line fuse switch disconnector 3-pole selectable, Sz. 1 I=250 A, U=690 V Flat terminal M10, with electronic fuse Monitoring EFM

STRIP OF SECC. WITH 3-POLE FUSE MANEUVERABLE, TAM 1 I=250A, U=690V FLAT CONNECTION M 10 NEW DESIGN WITH ELECTRONIC FUSE SURVEILLANCE VFE. Manufactured to order. Non-Cancelable Non-Returnable.

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3NJ6272-3AA00-0AA0

3NJ6272-3AA00-0AA0

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Switch disconnector with fuses In-line design, pluggable BS B2, 2-pole High switching capacity H manual operation without auxiliary switch without current transformer without ammeter

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3NJ4133-3BF01

3NJ4133-3BF01

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In-line fuse switch disconnector 3-pole selectable, Sz. 2 I=400 A, U=690 V Screw terminal M12,

VERTICAL BASE WITH 3-POLE FUSES SWITCHABLE(S), SIZE 2, I=400A, U=690V CONNECTION BY SCREWS M 12 NEW DESIGN. Manufactured to customer specifications. Non-Cancelable Non-Returnable.

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3NJ6212-4AE00-0AA0

3NJ6212-4AE00-0AA0

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Switch disconnector with fuses In-line design, pluggable NH1 250 A, 2-pole High switching capacity H Motor drive, Fuse monitoring EFM 25 without auxiliary switch without current transformer without ammeter

 		3 View Availability View Price

3NJ6263-3AA00-0AA0

3NJ6263-3AA00-0AA0

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Switch disconnector with fuses In-line design, pluggable BS 00T, 3-pole High switching capacity H manual operation without auxiliary switch without current transformer without ammeter

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3NJ4103-3BR02

3NJ4103-3BR02

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In-line fuse switch disconnector 3-pole selectable, Sz. 00 I=160 A, U=690 V Box terminal up to 70 mm2 new design

FUSE DISCONNECTOR SWITCH 3 POL MANEUVERABLE, TAM 00 I=160A, U=690V BORNE RING GAUGE UP TO 70 MM2 NEW DESIGN. Manufactured to customer specifications. Non-Cancelable Non-Returnable.

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3NJ6202-4AA00-0AA0

3NJ6202-4AA00-0AA0

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Switch disconnector with fuses In-line design, pluggable NH00 160 A, 2-pole High switching capacity H Motorized operating mechanism without auxiliary switch without current transformer without ammeter

 		3 View Availability View Price

3NJ6204-2AC00-0AA0

3NJ6204-2AC00-0AA0

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Switch disconnector with fuses In-line design, pluggable NH00 160 A, 4-pole Standard switching capacity S Motor drive, Fuse monitoring EFM 20 without auxiliary switch without current transformer without ammeter

 		3 View Availability View Price

3NJ6272-4AA00-0AA0

3NJ6272-4AA00-0AA0

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Switch disconnector with fuses In-line design, pluggable BS B2, 2-pole High switching capacity H Motorized operating mechanism without auxiliary switch without current transformer without ammeter

 		3 View Availability View Price

3NJ6224-2AA00-0AA0

3NJ6224-2AA00-0AA0

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Switch disconnector with fuses In-line design, pluggable NH2 400 A, 4-pole Standard switching capacity S Motor drive, without auxiliary switch without current transformer without ammeter

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3NJ6234-1AC00-0AA0

3NJ6234-1AC00-0AA0

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Switch disconnector with fuses In-line design, pluggable NH3 630 A, 4-pole Standard switching capacity S manual operation Fuse monitoring EFM 20 without auxiliary switch without current transformer without ammeter

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3NJ4153-3BF01

3NJ4153-3BF01

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fuse switch disconnector 3-pole switchable, for protection of transformers on the secondary side up to 500 kVA for LV HRC fuses GTR 722 A max., 400 V AC, and NH3 disconnecting blade up to 1000 A

SECTION STRIP. WITH 3 POLE MANIOBR FUSE. NEW DESIGN FOR RRANSF PROTECTION. IN SECONDARY ZONE UP TO 500 KVA FOR NH GTR 722 A MAX. FUSES, 400V AC, AND NH3 SECC BLADE. UP TO 1000 BC

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3NJ4910-1AA00

3NJ4910-1AA00

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Grounding equipment Accessory for fuse switch disconnector 3NJ 412-3NJ418 with connecting cable 25 mm2

ACCESSORIES FOR 3NJ418 SLATS, SPECIAL FUSE TAM. NH3, 910A. Manufactured to order. Non-Cancelable Non-Returnable.

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3NJ4121-3BF11

3NJ4121-3BF11

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In-line fuse switch disconnector 1-pole selectable, Sz. 1 I=250 A, U=690 V Screw terminal M10, Current transformer installation possible

SECTION STRIP. WITH 1pole MANEUVERABLE FUSES, TAM. 1 I=250A, U=690V CONNECTION BY SCREWS M10 NEW DESIGN; TRANSF ASSEMBLY. OF POSSIBLE INTENSITY. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

3NJ6283-3AA00-0AA0

3NJ6283-3AA00-0AA0

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Switch disconnector with fuses In-line design, pluggable BS B4, 3-pole High switching capacity H manual operation without auxiliary switch without current transformer without ammeter

 		3 View Availability View Price

3NJ6294-2AB00-0AA0

3NJ6294-2AB00-0AA0

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Switch disconnector with fuses In-line design, pluggable BS 3T, 4-pole Standard switching capacity S Motor drive, Fuse monitoring EFM 10 without auxiliary switch without current transformer without ammeter

 		3 View Availability View Price

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