16-300 mm²: This is the cross-sectional area (CSA) range of the conductors (cables/wires) the tool can crimp. This is a very wide range, making it a "one-tool-fits-many-jobs" solution.
16 mm² is a moderately sized cable (roughly equivalent to 5 AWG).
300 mm² is a very large industrial cable (roughly equivalent to 600 MCM/kcmil). Crimping this requires significant hydraulic force.
Hydraulic: The tool uses hydraulic fluid pressure to generate immense force (usually measured in tons, e.g., 6-12 tons) to create a cold-weld, gas-tight connection between a cable lug/ferrule and the conductor.
Typical Features of Such a Tool:
Interchangeable Dies/Head: This is the most critical feature for this range. The tool will come with a set of color-coded or marked dies that fit into the tool's head. Each die is sized for a specific range of conductors (e.g., 16-25 mm², 35-50 mm², up to 240-300 mm²).
Pump Mechanism:
Manual: A hand-operated pump (lever). Common, portable, but requires physical effort for large crimps.
Battery-Powered (Electric Hydraulic): A rechargeable battery powers the pump. Highly recommended for frequent use or crimping large cables (300 mm²), as it saves time and labor.
Pneumatic/Air-Powered: Uses compressed air. Common in workshops.
Ratchet Mechanism: Prevents the dies from opening until the crimp is complete, ensuring a full cycle and a proper crimp every time.
Frame/Jaw Design: Usually a "C" or "D" shaped frame for accessing crimps in tight spaces. For 300 mm², the frame will be robust and relatively heavy.
Common Applications:
Industrial Electrical Panels: Connecting main power feeds, large motors, transformers.
Renewable Energy: Solar farm combiner boxes, wind turbine connections, battery bank cables.
Substations & Power Distribution.
Marine & Offshore: Heavy-duty shipboard cabling.
Mining & Construction: Equipment power cables.
Telecom & Data Centers: Large grounding/bonding conductors.
Key Considerations Before Buying/Using:
Die Set Completeness: Verify the included die set covers the exact sizes you need (e.g., 50 mm², 95 mm², 185 mm²). You may need to purchase specific dies separately.
Conductor Type: Ensure the dies are compatible with the type of lug you're using (copper, aluminum, tubular, pin, etc.). Some dies are shaped for specific lug brands/styles.
Battery vs. Manual: For crimping above ~120 mm² regularly, strongly consider a battery-powered model. Crimping 300 mm² manually is extremely strenuous.
Quality & Standards: Look for tools that comply with relevant standards (e.g., IEC, DIN, UL) and are from reputable brands (e.g., Rennsteig, Klauke, Phoenix Contact, Weidmüller, TE Connectivity, Greenlee).
Compatibility with Insulated & Non-Insulated Lugs: Most hydraulic crimpers are for non-insulated (bare) lugs, which are then insulated with heat-shrink. For pre-insulated lugs, you need a specific "insulated lug" die set.
Calibration: For critical industrial applications, the tool should be part of a calibrated system to ensure every crimp meets the required pull-out force and electrical conductivity.
Popular Tool Types in This Category:
Manual Pump + Interchangeable Head: A cost-effective, portable option. (Effort required for large crimps).
Battery-Powered Crimper: The most efficient and ergonomic choice for field and shop work.
Bench-Mounted Hydraulic Press: For very high-volume crimping in a workshop setting.
Safety & Best Practices:
Always use the correct die for the exact cable size and lug.
Ensure the cable is stripped to the correct length.
Insert the lug fully into the die before crimping.
Perform a pull test on sample crimps to verify connection strength.
Wear safety glasses.
In summary, a 16-300 mm² hydraulic crimper is a professional-grade tool for heavy-duty electrical work. Your choice between manual, battery, or pneumatic will depend on your budget, usage frequency, and the specific applications (especially how often you'll be crimping at the top end of that range).
https://store.unigulfsupply.com/product/hydraulic-crimping-tool-16-300mm2/