IWISS iCrimp SN-2549 Ratcheting Crimp Tool for JST ZH 1.5mm, PH 2.0mm, XH 2.5mm, VH 3.96mm, JWPS 4.0mm, and Dupont 2.54mm Open-Barrel Terminals – AWG28-18

Overview

The IWISS iCrimp SN-2549 is a ratcheting crimping tool designed to deliver dependable, repeatable crimps on common uninsulated open-barrel terminals. Built to handle a wide range of pitch formats—from JST ZH 1.5 mm to 4.0 mm JWPS spacing—this tool aims to simplify wiring projects that require clean, professional terminations on JST, Dupont, and Molex connectors. Its robust construction and smooth operation invite confident, hands-on use in hobbyist setups and small-scale production alike.

Key benefits

• High-precision ratchet mechanism ensures complete crimps with minimal rework.
• Parallel jaw action supports even, consistent crimps across terminals.
• Ratcheting design maintains steady crimping pressure throughout the full cycle.
• Compatible with AWG28-18 (0.08-1.0 mm²) open-barrel terminals across multiple pitches (1.5 mm to 3.96 mm).
• Works with popular terminal families from JST, Dupont, and Molex, including 1.5–3.96 mm pitch options.

Real-world use cases

• Wiring rechargeable battery packs, balancers, and battery eliminator circuits with tidy, reliable terminations.
• Connecting wires for 3D printers, RC servos, and other hobby electronics where quick, repeatable crimps matter.
• Assemblies that require open-barrel terminals for straightforward insulation removal and terminal seating.

How to get the best results

• Place a prepared AWG28-18 wire into a compatible open-barrel terminal, then insert into the jaws.
• Use a controlled, even squeeze to engage the ratchet; the tool will cycle through to complete the crimp.
• Inspect the crimp for a tight, square profile and secure seating before wiring or testing.

Design notes

The SN-2549 combines reliability with versatility, pairing a durable metal build with an intuitive ratchet mechanism. It is well-suited to both serious hobbyists and workshop tasks that require consistent, field-ready terminations without excessive force or guesswork.