Rexroth HED 8 Pressure Switch | R90110709 | HED-8-OP-2X | R901106452

Rexroth HED 8 Series Piston-Type Pressure Switches

Product Overview:

The Rexroth HED 8 Series is a high-performance piston-actuated hydraulic pressure switch designed for pressure monitoring and logic control in industrial systems. This series utilizes a piston mechanism to sense system pressure; once the pre-set pressure is reached, an internal micro-switch is triggered to output an electrical signal. Known for its rugged mechanical construction and high switching accuracy, the HED 8 is ideal for machine tools, hydraulic presses, and power units. With support for contact voltages up to 250V AC, it offers exceptional electrical reliability and durability in harsh environments.

Featured models on this page include the standard R90110709 (HED-8-OP-20/200) and the specific configuration R901106452 (HED-8-OA-2X/200).

Key Technical Advantages:

• Rugged Piston Design: Unlike diaphragm switches, the piston-type architecture is better suited for high-pressure and high-cycle applications, ensuring a longer operational life.

• Precise Adjustment Range: Supports pressure settings up to 200 Bar, with an easy-to-use adjustment screw for fine-tuning the trigger point.

• High-Capacity Electrical Contacts: Rated for 250V AC / 2A or 24V DC / 2A, allowing direct integration with relays or PLC control systems.

• Tamper-Proof Protection: Features transparent protective covers or locking mechanisms to prevent accidental changes to the pressure settings.

Detailed Specifications & Parameters:

• Core Series: Rexroth HED 8 Series (Piston Type).

• Featured Model & Part Number Matrix:

  • HED-8-OP-20/200K1H (Part No: R90110709) – 200 Bar setting, standard connector.

  • HED-8-OA-2X/200K14AS (Part No: R901106452) – Design Series 2X, 200 Bar spec.

• Core Technical Specs:

  • Switching Capacity: 250V AC / 2A; 24V DC / 2A.

  • Max Operating Pressure: Set pressure up to 200 Bar, withstanding up to 315 Bar.

  • Repeatability: $\le \pm 1\%$ of the maximum set pressure.

  • Electrical Connection: Plug-in connector according to DIN EN 175301-803.