ABB 63NHG00B-690 3ABD0001782 HRC Fuse – NH00 Series

ABB 63NHG00B-690 3ABD0001782 — NH00 HRC Blade Fuse for 690 V AC Industrial Power Distribution

The ABB 63NHG00B-690 (ABB reference 3ABD0001782) is a 63 A, 690 V AC, NH Size 00 high-rupturing-capacity (HRC) blade fuse manufactured to IEC 60269-1/-2 and DIN VDE 0636. It carries a gG utilization category, meaning its time-current characteristic is optimized for general-purpose cable and transformer protection: it tolerates motor inrush and transformer magnetizing currents without nuisance operation, yet clears bolted short-circuit faults within milliseconds. With a rated breaking capacity of 120 kA at 690 V AC, this fuse is suitable for installation at points of high prospective short-circuit current — including the secondary busbars of medium-voltage/low-voltage transformers and the incoming feeders of large motor control centers.

The 690 V AC voltage rating is the defining characteristic that separates this model from the more common 500 V or 400 V NH fuses. European and Asian heavy-industry networks — steel mills, cement plants, petrochemical complexes, and port crane systems — routinely operate at 660–690 V AC to reduce feeder current and cable cross-section. The 63NHG00B-690 is dimensionally identical to all NH00 fuses (DIN 43620 blade geometry), so it drops directly into any NH00-rated fuse base, switch-disconnector, or fuse-switch from ABB, Siemens, Eaton, or Schneider Electric without mechanical modification.

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Technical Parameters

Hardware Logical Analysis

The internal architecture of an NH HRC fuse is deceptively sophisticated. The 63NHG00B-690 uses a multi-element silver fuse wire arrangement embedded in high-purity quartz sand filler inside a steatite ceramic body. The quartz sand serves a dual function: it acts as a thermal mass that absorbs arc energy during fault clearing, and it provides the dielectric medium that quenches the arc column once the fuse elements melt. This sand-quench mechanism is what enables the 120 kA breaking capacity at 690 V — a performance level that air-break fuses of comparable physical size cannot approach.

The fuse elements are notched at calculated intervals along their length. These notches create localized high-resistance zones that initiate melting simultaneously at multiple points when fault current exceeds the threshold. Multi-point simultaneous melting is critical at 690 V: it prevents the formation of a single sustained arc column that could re-strike across the full element length. Instead, multiple short arc segments form and are individually quenched by the surrounding quartz, limiting total arc energy (I²t let-through) to values that protect downstream semiconductor devices and cable insulation.

The gG time-current characteristic is achieved by varying the cross-sectional profile of the fuse elements between the notched zones. Wider sections carry sustained overload current without reaching melting temperature, providing the thermal inertia needed to ride through motor starting currents (typically 6–8 × In for 0.5–10 seconds). The notched zones, being narrower, reach melting temperature rapidly under short-circuit conditions, ensuring sub-cycle clearing at high multiples of rated current.

The mechanical striker pin is a spring-loaded plunger held in compression by the intact fuse element. When the element melts, the spring releases, driving the pin outward by approximately 10–12 mm. This mechanical displacement can actuate a microswitch in the fuse base to generate a remote alarm signal to a PLC or SCADA system — a feature that eliminates the need for current-sensing relays on individual fuse branches in large distribution boards.

The tin-plated copper blade contacts are dimensioned to DIN 43620 tolerances, ensuring consistent contact resistance (typically < 0.5 mΩ per blade at rated current) across all NH00-compatible fuse bases. Low contact resistance is critical at 63 A continuous: even a 1 mΩ increase in contact resistance generates an additional 3.97 W of heat per contact pair, which accumulates in enclosed switchgear and can degrade adjacent insulation over time. ABB’s manufacturing process includes 100% contact resistance verification on production fuses.

System Integration Benefits

• Direct 690 V AC compatibility without derating: Unlike 500 V-rated fuses that require conservative derating when applied at 690 V, the 63NHG00B-690 is fully rated for 690 V AC continuous operation, eliminating the engineering overhead of derating calculations and the risk of under-protection.
• 120 kA fault clearance protects transformer secondary busbars: Large LV transformers (1000–2500 kVA) can deliver prospective short-circuit currents of 40–80 kA at their secondary terminals. The 120 kA Icu rating provides a substantial safety margin, ensuring the fuse clears before fault energy can damage busbars, cable terminations, or adjacent switchgear.
• gG characteristic coordinates with downstream MCBs and contactors: The gG time-current curve is standardized in IEC 60269-2, enabling straightforward selectivity (discrimination) calculations with downstream miniature circuit breakers (MCBs) and motor protection relays. Engineers can verify coordination using published I²t let-through values without empirical testing.
• Striker pin enables PLC-integrated fault detection: When paired with an NH00 fuse base equipped with a striker-pin microswitch, the blown-fuse signal can be wired directly to a PLC digital input. This allows the control system to log the fault timestamp, isolate the affected branch, and generate a maintenance work order — reducing mean time to repair (MTTR) compared to manual panel inspection.
• NH00 form factor ensures multi-vendor panel compatibility: The DIN 43620 NH00 blade geometry is an open standard. The 63NHG00B-690 is mechanically interchangeable with NH00 fuses from Siemens (3NA), Eaton (NH000), and Schneider Electric (DF2), simplifying spare-parts management in multi-vendor installations and reducing the number of distinct part numbers held in maintenance stock.
• Ceramic body withstands high ambient temperatures: Steatite ceramic retains its mechanical and dielectric properties up to 900 °C, far exceeding the arc temperatures generated during fault clearing. This ensures the fuse body does not crack or fragment during operation, preventing secondary faults caused by debris in the fuse base.
• Quartz sand filler eliminates arc flash propagation risk: The fully enclosed arc-quench mechanism means that fault energy is contained within the fuse body. Unlike open-element fuses or some molded-case circuit breakers, there is no external arc flash or ionized gas ejection during fault clearing, reducing the arc flash incident energy at the panel face.
• 12-month warranty with full traceability: Each unit supplied by siemensplc.com carries a 12-month warranty from dispatch date, backed by batch-level traceability records. In the event of a warranty claim, the lot number and date code allow rapid identification of the production batch and cross-reference with ABB’s quality records.

Quality Assurance & Global Logistics

Every ABB 63NHG00B-690 unit dispatched from our Xiamen, China facility is sourced through verified ABB-authorized supply channels. Before shipment, each unit undergoes a structured pre-dispatch inspection protocol: visual examination of the ceramic body for cracks or chips, verification of striker-pin spring tension and travel distance, confirmation of blade contact surface condition (no oxidation, pitting, or deformation), and cross-referencing of the ABB date code and lot number against the authorized product database to screen for non-genuine components.

Units are packed in original ABB retail or bulk packaging with intact tamper-evident seals. A Certificate of Conformance (CoC) is available on request for quality-system documentation purposes. For orders requiring material test reports or third-party inspection, please specify at the time of inquiry.

Logistics from Xiamen covers all major global destinations. Standard air freight to Europe (Frankfurt, Amsterdam, Paris) and North America (Los Angeles, Chicago, New York) typically achieves 3–5 business days door-to-door. Express courier options (DHL, FedEx, UPS) are available for urgent requirements. Sea freight consolidation is available for pallet-quantity orders where lead time permits. All shipments include commercial invoice, packing list, and country-of-origin certificate. Import duty classification: HS Code 8536.10 (fuses for a voltage not exceeding 1,000 V).

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
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