Product Overview

The Siemens 6ES7132-6HD01-0BB1 is a high-capacity relay output module designed for the SIMATIC ET 200SP distributed I/O architecture. Formally identified as the RQ 4x120VDC-230VAC/5A NO ST, this module provides four independent, floating Normally Open (NO) contacts. It is engineered to bridge the gap between low-voltage PLC logic and high-power field equipment. Unlike standard transistor outputs, these relay contacts allow for the direct switching of diverse AC and DC loads up to 5 Amps per channel, providing essential galvanic isolation and high switching reliability for critical industrial actuators.

Hardware Architecture and Engineering Specifications

Built for the compact ET 200S form factor, this module balances high current handling with advanced per-channel diagnostic logic.

• Output Density: 4 Digital Relay Outputs (Normally Open)

• Switching Voltage: 24V to 120V DC / 24V to 230V AC

• Continuous Current: 5.0 Amps per channel (thermal limit)

• Contact Type: Floating (no internal potential connection)

• Diagnostic Functions: Configurable per channel; supports substitute value output upon CPU stop

• Compatible BaseUnits: Type B0 or B1

• Color Identification Code: CC40

• Module Width: 20 mm

• Dimensions: 20 mm x 73 mm x 58 mm

• Net Weight: 0.04 kg

• Gross Shipping Weight: 0.95 kg

• Engineering Software: TIA Portal V14 or higher / GSD for PROFIBUS/PROFINET

Industrial System Deployments

High-Load Actuator ControlThe 5A rating makes the 6ES7132-6HD01-0BB1 ideal for directly driving large solenoid valves, heating elements, and small motors. Its ability to switch both AC and DC potentials on the same module provides significant wiring flexibility for machine builders managing mixed-voltage systems.

Safety and Isolation InterfacingIn environments with significant electrical noise or potential differences, the floating relay contacts provide a robust physical barrier between the field environment and the sensitive PLC backplane. This is particularly useful for interfacing with external third-party equipment or non-PELV/SELV circuits.

Power Plant and Infrastructure UtilitiesUtilized extensively in control systems for pumps and ventilation, the module's "substitute value" feature allows engineers to define a safe state (ON, OFF, or KEEP) for each relay in the event of a communication loss, ensuring infrastructure remains in a controlled condition during network failures.

Asset Management and MaintenanceFull support for I&M (Identification and Maintenance) data (0 to 3) allows for electronic tracking of the module's revision state and installation date. Combined with the CC40 color coding and TIA Portal diagnostics, maintenance teams can rapidly identify and replace components, minimizing operational downtime.