RO30C NH00C gG Knife Blade Fuse Link 500V 690V 2‑100A HRC Fuse for Low‑Voltage Distribution
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MIRO RO30B corresponds to standard NH00 size, gG utilization category, square‑tube knife‑blade plug‑in installation. Rated voltage AC 500V/690V, breaking capacity 100kA at 500V, 50kA at 690V. Max power dissipation 16W. Fully dimensionally and electrically interchangeable with international well‑known brands for spare‑parts retrofit and new‑project selection.
Date sheet
MIRO RO30B (NH00) measures 92 × 54 × 48 mm, it is a gG category knife‑blade fuse link, rated voltage 500V/690V, breaking capacity up to 100kA at 500V and 50kA at 690V. Current range: 2‑160A@500V, 2‑100A@690V, square‑tube knife‑blade plug‑in installation.
This product is fully matched with mainstream international brands in electrical performance and installation dimension for direct replacement, no cabinet or base modification required:
- Replaceable for Mersen NH00 gG series with identical voltage, breaking capacity and dimension, directly compatible with original fuse base;
- Interchangeable with Eaton NH00 series, same gG utilization category and universal plug‑in structure;
- Direct substitute for Littelfuse NH00‑Style knife‑blade fuse, identical electrical parameters and physical dimension for seamless retrofit;
- Replacement for Siemens 3NA3 series, fits existing switchgear without mechanical alteration;
- Drop‑in alternative for Bussmann NHG00‑690 fuse with equivalent protection performance.
Application scenario: Overload and short‑circuit protection for cables and circuits in low‑voltage cabinets, switchgears, motor control centers(MCC) and industrial power distribution systems.
| Parameter | Value | Test standard/method |
|---|---|---|
| Frequency | 45‑62Hz | Test by network analyzer |
| Rated working Voltage | 500V/690V | Voltmeter |
| Rated working Current | 500V: 2A,4A,6A,8A,10A,16A,20A,25A,32A,40A,50A,63A,80A,100A,125A,160A 690V: 2A,4A,6A,8A,10A,16A,20A,25A,32A,40A,50A,63A,80A,100A | Ammeter, clamp meter |
| Power dissipation of a fuse‑link | 16W max | Millivoltmeter |
| Breaking capacity of a fuse‑link | 500V/100kA 690V/50kA | Type test |
| Utilization category of a fuse‑link | gG | GB 13539.1‑2015 GB/T 13539.2‑2015 |
| Installation method | Square‑tube knife‑blade plug‑in type | ‑ |
PRODUCTS SIZE:
Applications
Protection against overload and short-circuit in electric lines (type gG), also available for protection of semiconductor parts and equipments against short-circuit (type aR) and protection of motors (type aM).
Design Features
Variable cross-section fuse element made from pure copper or silver sealed in cartridge made from high-duty ceramic; Fuse tube filled with chemically treated high-purity quartz sand as arc extinguishing medium. Dot-welding of fuse element ends to the terminals ensures reliable electric connection and forms insert knife type contacts. Indicator or striker may be attached to the fuse link to show cutout of fuse or to give various signals and to cut the circuit automatically.
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