Benshaw RB2-1-S-077A-13C Open Chassis Soft Starter

RB2-1-S-077A-13C Open Chassis Soft Starter from Benshaw is a compact 208-575 VAC, 77 A max soft starter that integrates MX2 technology with an integral bypass and a rugged open-chassis power stack for smooth, controlled motor starting in standard-duty applications. The extended part number RB2-1-S-077A-13C supports motors rated 208 V (25 HP), 240 V (30 HP), 480 V (60 HP), and 575 V (75 HP), and the unit measures 15 in W × 10 in H × 8.4 in D with an approximate weight of 17 lb. Key features include dual ramp capability for loaded and unloaded starts, integrated metering and diagnostics, and optional Fieldbus communications to fit into modern control architectures. The integral bypass cont actor arrangement enables efficient operation without external bypass relays or cooling fans, streamlining enclosure design. MX2 control technology provides robust motor protection and flexible starting profiles to reduce inrush and torque transients, making this open-chassis starter well suited for applications requiring reliable, compact soft-start control in a readily serviceable package. This model embodies Benshaw’s MX2 platform in a compact RB2 chassis, delivering precise start ramps, motor protection, and straightforward integration for a wide range of low-voltage motors.