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Product Description
NH3 315A-1000A 500V/690V aR Blade Type High speed Fuse Link
Product Parameter
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Parameter
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Type
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NH3
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Class of Operation
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aR
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Test Standards
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IEC60269
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Rated Voltage Ue
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500V/690V
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Rated Breaking Capacity
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120kA/50kA
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20-Rated Current
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315-1000A
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Arc Suppression: Silver-sand filler and ceramic tubes quench arcs at 100 kA fault levels, minimizing voltage spikes that damage sensitive components .
2. Selective Coordination with Overload Devices
aR fuses operate synergistically with external overload relays or electronic protectors:
Short-Circuit Duty: aR handles catastrophic faults (>10× rated current), while overload devices manage lower currents (e.g., motor startup surges). This extends equipment lifespan and avoids nuisance tripping .
