170M6810D BUSSMANN FUSE 630A 690V

170M6810D BUSSMANN FUSE 630A 690V – High-Speed 630A 690VAC Size 3 Square Body DIN 43620 Semiconductor Protection Fuse

The 170M6810D BUSSMANN FUSE 630A 690V (Model 170M6810D) is an ultra-fast, high-power square body semiconductor protection fuse manufactured by Eaton’s Bussmann series. Specifically designed to safeguard sensitive power electronics—such as diodes, thyristors, power transistors, silicon-controlled rectifiers (SCRs), and insulated-gate bipolar transistors (IGBTs)—this $630text{-amp}$ , $690text{ VAC}$ (IEC) / $700text{ VAC}$ (UL) fuse delivers maximum short-circuit and current-limiting protection across high-capacity industrial power systems.

Featuring an advanced Class aR high-speed operating characteristic, the 170M6810D BUSSMANN FUSE 630A 690V offers ultra-low let-through energy ( $I^2t$ ) and an exceptionally high interrupting rating of $200text{ kA RMS}$ Symmetrical at $700text{ VAC}$ . Built in a standardized DIN 43620 Size 3 square body format with dual knife-blade contact tags, it rapidly interrupts short circuits to protect downstream solid-state switching devices from catastrophic thermal and mechanical destruction. It also features a built-in visual trip indicator (Type K indicator with $K=0.6$ ) designed to actuate remote microswitches for real-time status monitoring.

Key Features of the 170M6810D BUSSMANN FUSE 630A 690V

Ultra-Fast Class aR Semiconductor Protection: Engineered with low pre-arcing and total clearing $I^2t$ let-through energy to clear fault currents in milliseconds, preventing damage to delicate semiconductor junctions.
High $200text{ kA}$ Breaking Capacity: Fully rated for an interrupting capacity of $200text{ kA RMS}$ Symmetrical at $700text{ VAC}$ , ensuring maximum fault protection in high short-circuit current rating (SCCR) equipment.
DIN 43620 Size 3 Blade Profile: Standardized Size 3 square body with knife-blade contacts allows straightforward installation into industrial DIN-style fuse bases and switchgear.
Dual IEC & UL Voltage Ratings: Rated for $690text{ VAC}$ under IEC standards and $700text{ VAC}$ under UL standards, making it versatile for global industrial installations.
Integrated Visual Trip Indicator: Features a red visual trip indicator ( $K=0.6$ ) that provides clear optical indication upon opening and operates optional microswitches for remote PLC alarm signaling.
Low Resistance & Power Loss: Designed with a low cold resistance of $0.2081text{ m}Omega$ (at $21^circtext{C}$ ) to minimize continuous operating power losses and control enclosure heat generation.

Common Applications and Practical Usage

The rapid clearing speed and high current capacity of the 170M6810D BUSSMANN FUSE 630A 690V make it a vital component across heavy industrial power systems and renewable energy platforms:

High-Power Variable Frequency Drives (VFDs): Protects heavy-duty AC/DC motor drives, main inverter bridges, and input rectifiers in mining, oil & gas, and manufacturing plants.
DC Common Bus & Power Converters: Shields continuous DC buses, multi-axis drive systems, and large power conversion equipment.
Solar Inverters & Energy Storage Systems (ESS): Provides rapid fault isolation for commercial solar central inverters, grid-tied converters, and large battery storage banks.
Uninterruptible Power Supplies (UPS): Protects static transfer switches, battery isolation buses, and high-capacity inverter circuits in data center backup power systems.

Technical Specifications

The core electrical, physical, and compliance parameters for the 170M6810D BUSSMANN FUSE 630A 690V are detailed below:

Parameter Specification	Technical Details & Operational Values
Component Classification	High-Speed Square Body Semiconductor Fuse
Primary Target Keyword	170M6810D BUSSMANN FUSE 630A 690V
Brand / Series	Eaton Bussmann Series / 170M High-Speed
Catalog Model / Part No.	170M6810D
Amperage Rating	$630text{ Amps}$ ( $630text{A}$ )
Voltage Rating	$690text{ VAC}$ (IEC) / $700text{ VAC}$ (UL)
Interrupt Rating (IR)	$200text{ kA RMS}$ Symmetrical at $700text{ VAC}$
Utilization Category	Class aR (Partial Range Semiconductor Protection)
Cold Resistance	$0.2081text{ m}Omega$ at $21^circtext{C}$
Form Factor & Standard	Square Body Size 3 with DIN 43620 Blade Terminals
Trip Indicator	Visual Indicator ( $K=0.6$ , Microswitch Compatible)
Agency Certifications	IEC 60269-4, UL Recognized, CSA Certified, CE, EAC, RoHS

Operating Guidelines and Usage Tips

SAFETY NOTICE: Always isolate power supplies and verify circuits are fully de-energized using a calibrated voltage tester prior to inspecting or replacing high-speed power fuses.

Holder Compatibility: Install exclusively in dedicated Size 3 DIN knife-blade fuse bases or open blade blocks designed for high-speed square body fuses.

Semiconductor Matching: Ensure the fuse’s total clearing $I^2t$ rating is lower than the withstand capability ( $I^2t$ ) of the power semiconductor being protected to ensure proper isolation under short circuits.

To review official high-speed semiconductor fuse standards and power electronics protection criteria, consult the International Electrotechnical Commission (IEC) Portal.

To check regional warehouse inventory availability or request commercial quotes for volume electrical fuses, visit the Control Qatar Contact Page.

170M6810D BUSSMANN FUSE 630A 690V