Overview
The Allen-Bradley 802T-R8TD is a Series 2 oiltight limit switch engineered for demanding industrial automation and motion control applications. This switch provides heavy-duty pilot ratings, small size, a high degree of versatility, and rugged NEMA Type 13 oiltight construction. The time delay variant is ideal for applications requiring precise control timing in harsh environments where oil, coolant, and moisture exposure is common.
Key Features
- NEMA Type 13 Oiltight Design: Heavy-duty pilot ratings with rugged NEMA Type 13 oiltight construction
- Plug-In Style: Head and switch body can be replaced while leaving the wiring chamber base in place, reducing downtime by eliminating the need for rewiring upon switch replacement
- Time Delay Functionality: Series 2 time delay model for applications requiring controlled switching intervals
- Compact Form Factor: Small footprint enables installation in space-constrained control panels and machinery enclosures
- 2-Circuit Configuration: Dual-circuit switching capability for complex control logic and redundant safety circuits
Technical Specifications
The following specifications apply to the 802T-R8TD Series 2 time delay model:
- Manufacturer: Allen-Bradley (Rockwell Automation)
- Series: 802T Oiltight Limit Switches (Plug-In Style)
- Model: 802T-R8TD
- Variant: Series 2 Time Delay
- Enclosure Rating: NEMA Type 13 Oiltight
- Circuit Type: 2-Circuit (Dual-Channel)
- Operating Temperature Range: -18°C to 110°C standard
- Thread Connection: 1/2″ NPT (standard)
- Actuator Type: Rotary Lever Arm with Spring Return
- Operation: Clockwise and Counterclockwise capable
- Mounting: NEMA-style standard mounting with size 10 screws
Typical Applications
- Machine tool limit detection and travel control
- Conveyor system position sensing and start/stop control
- Pump and motor startup sequencing with time delays
- Hydraulic and pneumatic press control and safety circuits
- Industrial automation equipment with oil and coolant exposure
- Motion control systems requiring pilot-duty switching
- Heavy-duty machinery requiring NEMA Type 13 environmental protection
Compatibility & Replacements
Compatible With
- Allen-Bradley SLC 500, MicroLogix, and CompactLogix control systems via limit switch input modules
- Any industrial control system with 120-600 VAC or 115-600 VDC pilot circuit requirements
- Motor starters, contactors, and solenoid-operated valve coils rated for pilot-duty operation
- NEMA 4X and industrial machinery requiring oiltight limit switching
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 802T-R8TD is the time delay variant of the 802T series; other non-delay 802T models (such as 802T-AP) require confirmation of electrical and mechanical compatibility for direct substitution.
Works With
- Pilot-duty control circuits up to 600 VAC and 600 VDC
- Motor starters and contactors with standard pilot coil ratings
- Industrial PLC/Automation controllers requiring discrete input modules
- Safety interlocks and emergency stop circuits
- Time-delay relay modules and timing circuits
