Overview
The Potter & Brumfield CDB-38-70005 is a proven DPDT on-delay time delay relay designed for industrial control applications requiring precise timing. With an adjustable delay range of 1.8 to 180 seconds and a 120VAC coil input, this relay delivers consistent performance in motor control, pump sequences, and startup delay circuits. The octal plug-in design enables fast installation and replacement in standard relay sockets.
Key Features
- DPDT (2 Form C) contact configuration for flexible switching logic
- On-delay (delay-on-make) timing function with knob adjustment
- Adjustable delay range: 1.8 to 180 seconds
- Octal socket mounting for easy installation and removal
- Rated for 10A at 277VAC and 30VDC contacts
- 120VAC coil input (105–130VAC operating range)
Technical Specifications
- Timing Range: 1.8–180 seconds (adjustable via knob)
- Coil Voltage: 120VAC
- Coil Voltage Range: 105–130VAC
- Contact Configuration: DPDT (2 Form C)
- Contact Rating (AC): 10A @ 277VAC
- Contact Rating (DC): 10A @ 30VDC
- Mounting Style: Octal plug-in socket
- Timing Mode: Delay on operate (on-delay)
- Adjustment: Knob
- Series: CD (Time Delay Relay)
Typical Applications
- Motor startup and soft-start delay circuits
- Pump priming and sequencing control
- Furnace and HVAC system timing
- Process automation delay functions
- Industrial machinery interlocks and safety circuits
- Fan and blower delay-on-make control
Compatibility & Replacements
Compatible With
- 8-pin octal relay sockets (27E122 screw terminal or 27E891 DIN rail mount)
- Standard 120VAC control circuits
- Industrial motor control panels and PLCs
- DIN rail systems with octal socket adapters
- Legacy industrial automation systems using plug-in relays
Replaces / Drop-In Replacement For
- Potter & Brumfield CDB-38-70005 (direct equivalent)
- TE Connectivity CDB-38-70005
- Compatible with other CD-series time delay relays in similar configurations (verify delay and coil voltage)
Works With
- Allen-Bradley and general industrial PLC systems
- Motor control centers (MCCs) and electrical enclosures
- Schneider Electric and Siemens control circuits
- Standard 120VAC relay logic and control schemes
- 8-pin DIN rail and chassis-mount relay sockets
