Siemens 3NE8334-0MK High Speed Semiconductor Fuse, 500A 690V aR, Size 3NH Flush-End, IEC 60269-4, 200kA Breaking Capacity – Pack of 3

Siemens 3NE8334-0MK High Speed Semiconductor Fuse, 500A 690V aR – Pack of 3

The Siemens 3NE8334-0MK is a high-speed aR semiconductor protection fuse designed for reliable short-circuit protection of power electronic devices such as IGBTs, diodes, and SCRs. Built to IEC 60269-4, this square/flush-end style fuse supports demanding applications including DC link/common bus, drives, rectifiers, and power converters operating up to 690 V AC. Its fast-acting characteristics minimize I2t let-through to safeguard sensitive semiconductor components.

Key Features

• Rated current: 500 A
• Voltage rating: 690 V AC
• Utilization category/Class: aR (semiconductor protection)
• Interrupting (breaking) capacity: up to 200 kA (IEC typical for this series)
• Mounting: Flush-end, 3NH form factor
• Standard compliance: IEC 60269-4
• Application focus: Semiconductor protection with low I2t

Mechanical & Installation

• Body style: High speed fuse, flush-end contacts (3NH)
• Mounting method: Bolt-down to suitable fuse bases or busbar terminals
• Polarity: Non-polarized

Applications

• DC link/common bus protection
• Drives, inverters, rectifiers, and power converters
• Industrial power systems and renewable energy equipment

Compliance

• IEC 60269-4 (semiconductor fuses)
• RoHS compliant

Package Contents

• 3 × Siemens 3NE8334-0MK high speed aR fuses (500 A, 690 V)

Notes

• Verify coordination, thermal performance, and I2t against your operating conditions and the official Siemens datasheet for 3NE8334-0MK.
• Use compatible 3NH fuse bases/holders and recommended torque/hardware.