Overview
Potter & Brumfield CSJ-38-70010 is a solid-state hybrid voltage sensor relay designed for precise AC voltage monitoring and control. This general-purpose relay combines adjustable detection thresholds with reliable contact switching, making it suitable for machinery protection, process control, and electrical distribution oversight.
Key Features
- Adjustable pick-up (92–140V) and drop-out (90–138V) thresholds
- Functions as both over-voltage and under-voltage sensor
- Internal 2 Form C (DPDT) relay contacts for flexible switching logic
- Quick-connect and 8-pin octal plug-in mounting options
- Plastic dust cover enclosure with continuous duty cycle rating
- Repeatability of ±1% max with 10–25 ms response time
Technical Specifications
The CSJ-38-70010 provides robust electrical performance across industrial and commercial installations:
- Contact Configuration: DPDT (2 Form C)
- Adjustable Pick-up Voltage: 92–140V AC
- Adjustable Drop-out Voltage: 90–138V AC
- Contact Rating: 10A @ 28VDC or 120VAC (80% power factor)
- Maximum Supply Voltage: 150VAC
- Power Consumption: <3VA (3W typical)
- Frequency: 50/60 Hz
- Repeatability: ±1% maximum
- Response Time: 10–25 ms typical
- Operating Temperature: −10°C to +55°C
- Temperature Coefficient: 0.2%/°C maximum
- Mounting Style: 8-pin octal style plug (fits 27E122 or snap-on/screw terminal sockets)
- Enclosure: Plastic dust cover
- Weight: 0.5 lbs (227 g)
Typical Applications
The Potter & Brumfield CSJ-38-70010 is commonly deployed in:
- Three-phase motor protection and over/under-voltage detection
- HVAC system control and compressor safeguards
- Power distribution and electrical panel monitoring
- Industrial machinery startup/shutdown sequencing
- UPS and standby generator coordination
- Instrumentation and process automation systems
Compatibility & Replacements
Compatible With
- 8-pin octal relay sockets (snap-on or screw terminal types)
- Industrial control panels rated for 150VAC maximum supply
- 50/60 Hz AC power distribution systems
- Standard 10A/120VAC control circuits
- Motor control centers (MCC) and electrical distribution boards
Replaces / Drop-In Replacement For
- TE Connectivity internal model 1-1393138-2
Works With
- 27E122 octal relay socket
- Snap-on and screw-terminal octal sockets
- Relay bases compatible with 8-pin octal form factor
- Industrial electrical control architectures (analog/discrete logic)
