Answer:
The NCRB K4-6 is the maximum-length configuration in the NCRB series, designed for driveways up to 6000 mm and fitted with a 2000 W drive motor. In contrast, smaller variants like the NCRB K4-4 cover up to 4000 mm using a 1500 W motor, with lower overall structural mass than the 1600 kg K4-6 assembly.
The Neptune NCRB series comprises four standard boom barrier sizes designed to meet ASTM K4 crash barrier specifications across varying lane openings:
- NCRB K4-3: Designed for clear roadway widths up to 3 meters.
- NCRB K4-4: Designed for clear roadway widths up to 4 meters, driven by a 1500 W hydraulic motor.
- NCRB K4-5: Designed for clear roadway widths up to 5 meters, utilizing an uprated 2000 W hydraulic motor.
- NCRB K4-6 (This SKU): The largest standard variant in the family, engineered to span roadway openings up to 6000 mm (6 meters). It utilizes the larger 2000 W electro-hydraulic drive unit at 1500 rpm to raise and lower the extended 120 mm x 60 mm crash beam within 4 to 6 seconds, while reaching the upper structural mass limit of approximately 1600 kg to absorb high dynamic impact loads over broad lane spans.
