Allen Bradley PowerFlex 755 Main Control Board Kit with One Year Warranty IP20 Rated 600V AC / 1000V DC

SK-R1-MCB1-PF755 Allen Bradley PowerFlex 755 Main Control Board Kit IP20

Product Overview

**SK-R1-MCB1-PF755** is a motion circuit breaker kit from the Allen-Bradley brand, a Rockwell Automation company, specifically designed for the Kinetix 5700 multi-axis servo drive system. This kit integrates short-circuit protection and ground fault detection, providing branch circuit protection for the servo motor power cable, and complies with NEC (National Electrical Code) and IEC 60204-1 mechanical electrical safety standards. Through its modular design and plug-and-play installation, the SK-R1-MCB1-PF755 significantly simplifies the electrical cabinet layout of multi-axis servo systems, reduces field wiring work, and is an indispensable protection component for building high-performance, high-safety servo control systems.

Core Technical Parameters and Specifications

Electrical Protection Characteristics

| Parameter Item | Technical Specifications | Remarks |

| **Product Model** | SK-R1-MCB1-PF755 | Kinetix 5700 Dedicated Circuit Breaker Kit |

| **System Compatibility** | Kinetix 5700 Multi-Axis Servo Driver | Supports 2198-Sxxx-ERS Series Drivers |

| **Rated Voltage** | 600V AC / 1000V DC | Suitable for High-End Servo Systems |

| **Rated Current** | **1-3A** (Adjustable) | Matches 0.5-2.5kW Servo Motors |

| **Breaking Capacity** | **65kA @ 480V AC** | High breaking capacity, capable of handling severe short-circuit faults |

| **Protection Functions** | Short-circuit protection + ground fault protection | Instantaneous tripping + electronic leakage current detection |

| **Trip Characteristics** | **Class 10** Inverse Time Protection | Compliant with motor overload protection curve |

**Ground fault threshold** | 30mA (fixed) / 120mA (optional) | Configurable sensitivity |

Core Functions and Technical Advantages

1. Dual-function integrated protection

The SK-R1-MCB1-PF755 integrates **magnetic short-circuit protection** and **electronic ground fault protection**:

- **Short-circuit protection**: The magnetic trip coil can interrupt a 65kA short-circuit current within <10ms, preventing damage to the driver power module.

- **Ground fault protection**: Detects leakage to ground in motor cables or windings; a 30mA threshold protects personnel and avoids fire risks.

- **Selective protection**: Achieves time-current selective coordination with upstream circuit breakers (such as the PowerFlex PF755 main circuit breaker) to ensure that only the faulty circuit is disconnected.

2. Native Kinetix 5700 integration

This kit is optimized for Kinetix 5700 systems:

- **Pre-configured Wiring:** Standard pre-crimped cables connect directly to the driver motor output terminals, reducing wiring time by 70%.

**Status Feedback:** Auxiliary contacts (1 NO + 1 NC) are provided, allowing connection to the driver safety input or PLC for remote trip indication.

**Software Recognition:** Automatically recognized in Studio 5000 Logix Designer, simplifying project configuration.

Typical Application Scenarios

** Multi-axis synchronous control in packaging machinery.

**Application:** High-speed food and beverage packaging machine (12-axis linkage).

**Solution:** Each Kinetix 5700 driver (e.g., 2198-S160-ERS) is equipped with 4 sets of SK-R1-MCB1-PF755, protecting the forming, filling, sealing, and labeling motors respectively. Ground fault protection prevents water splashing during cleaning from causing motor insulation degradation. Modular design allows for non-stop replacement of faulty axes, improving OEE by 8%.

Product Images

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Allen Bradley PowerFlex 755 Main Control Board Kit with One Year Warranty IP20 Rated 600V AC / 1000V DC Images