Parker PRTB10 Pneumatic Time Delay Relay Subbase Mount

Product Description

The PARKER PRTB10 is a pneumatic time delay relay designed for on-delay timing applications in industrial and HVAC control circuits. It provides a timing range of 10 to 180 seconds, making it well suited for sequenced startup routines and timed switching operations where a brief delay between signal input and contact switching is required. The relay features a normally closed (NC) contact form and installs via subbase mount, allowing for clean wiring and straightforward field replacement without disturbing existing terminations. Licensed electricians and HVAC controls technicians are the primary installers of this component.

The PRTB10 is used in commercial and light industrial control panels where pneumatic timing logic governs equipment sequencing. Typical applications include staged HVAC equipment startup, compressor delay-on-start circuits, and fan or pump sequencing systems. Its subbase mounting style is common in relay panel assemblies where modular replacement is a priority. The 2-pin configuration keeps integration straightforward in standard control wiring layouts.

Key Features

• On-delay timing range of 10 to 180 seconds for flexible sequencing control
• Normally closed (NC) contact form provides fail-safe default state
• Subbase mount design allows relay body replacement without rewiring
• 2-pin contact configuration for straightforward panel integration
• Pneumatic timing mechanism operates independently of electronic signal fluctuations

Compatibility

Designed as an OEM-style replacement for pneumatic time delay relay applications using subbase-mount relay sockets in commercial and industrial control panel assemblies.

Installation Notes

Installation should be performed by a licensed electrician or qualified HVAC controls technician in accordance with applicable NEC requirements. De-energize the control circuit and verify zero voltage at the subbase terminals before removing or seating the relay body. Confirm the subbase socket pin configuration matches the PRTB10 2-pin layout before applying power. Do not exceed the rated timing range when configuring the delay adjustment.