Allen-Bradley 700-CF310EJ Control Relay Contactor
The Allen-Bradley 700-CF310EJ , also cataloged as the 700-CF310EJ Control Relay Contactor, operates as a dedicated hardware component for low-voltage discrete circuit switching and logic interlock execution within industrial control panels.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 700-CF310EJ |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 0.90 lbs (0.41 kg) |
| Dimensions | Standard 700-CF industrial contactor footprint |
| Operating Temp | -25 to 60 deg C |
| Power Consumption | 24 VDC coil power consumption |
| Product Type | Contactors & Starters |
| Coil Voltage | 24 VDC |
| Contact Rating | 10 A thermal current limit |
| Contact Configuration | 3 NO / 1 NC (3 Normally Open / 1 Normally Closed) |
| Terminal Type | Heavy-duty screw terminals |
| Contact Material | Standard industrial silver-alloy contacts |
Backplane Bus Communication Velocity & Network Integration
The 700-CF310EJ control relay interfaces directly with 24 VDC discrete I/O driver cards powered by Allen-Bradley PLC platforms. Onboard electronic coil suppression reduces inductive back-EMF transients, preventing voltage spikes from propagating through local power distribution buses or disrupting backplane bus communication velocity across adjacent PLC I/O racks. Designed for high-frequency switching operations, the contactor provides reliable signal isolation and physical actuation while maintaining firmware flash compatibility and deterministic network response times within integrated automation cabinets.
Frequently Asked Questions
Q: What is the coil actuation voltage requirement for the 700-CF310EJ control relay?
A: The coil requires a dedicated 24 VDC control power source for full engagement and continuous hold operation.
Q: Can auxiliary contact blocks be added to expand the contact configuration of the 700-CF310EJ?
A: Yes, standard Allen-Bradley 700-CF front-mount and side-mount auxiliary contact blocks can be mechanically snapped onto the relay housing to expand the available contact configurations beyond the base 3 NO / 1 NC arrangement.
Field Installation Guidelines
- Isolate and lock out all 24 VDC control supply power and high-voltage line feeds before installing or servicing the relay.
- Snap the contactor housing securely onto a standard 35 mm DIN rail or bolt directly to the enclosure mounting plate using screw fasteners.
- Strip control and power conductors to the specified length, inserting them into the heavy-duty screw terminals.
- Torque all terminal screws to the manufacturer-recommended torque rating to ensure low-resistance electrical connections and prevent thermal hot spots.
- Verify coil suppression polarity when connecting the 24 VDC control leads to prevent short circuits across DC power supplies.
Allen-Bradley 700-CF310EJ Control Relay Contactor
Allen-Bradley 700-CF310EJ Control Relay Contactor
The Allen-Bradley 700-CF310EJ , also cataloged as the 700-CF310EJ Control Relay Contactor, operates as a dedicated hardware component for low-voltage discrete circuit switching and logic interlock execution within industrial control panels.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 700-CF310EJ |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 0.90 lbs (0.41 kg) |
| Dimensions | Standard 700-CF industrial contactor footprint |
| Operating Temp | -25 to 60 deg C |
| Power Consumption | 24 VDC coil power consumption |
| Product Type | Contactors & Starters |
| Coil Voltage | 24 VDC |
| Contact Rating | 10 A thermal current limit |
| Contact Configuration | 3 NO / 1 NC (3 Normally Open / 1 Normally Closed) |
| Terminal Type | Heavy-duty screw terminals |
| Contact Material | Standard industrial silver-alloy contacts |
Backplane Bus Communication Velocity & Network Integration
The 700-CF310EJ control relay interfaces directly with 24 VDC discrete I/O driver cards powered by Allen-Bradley PLC platforms. Onboard electronic coil suppression reduces inductive back-EMF transients, preventing voltage spikes from propagating through local power distribution buses or disrupting backplane bus communication velocity across adjacent PLC I/O racks. Designed for high-frequency switching operations, the contactor provides reliable signal isolation and physical actuation while maintaining firmware flash compatibility and deterministic network response times within integrated automation cabinets.
Frequently Asked Questions
Q: What is the coil actuation voltage requirement for the 700-CF310EJ control relay?
A: The coil requires a dedicated 24 VDC control power source for full engagement and continuous hold operation.
Q: Can auxiliary contact blocks be added to expand the contact configuration of the 700-CF310EJ?
A: Yes, standard Allen-Bradley 700-CF front-mount and side-mount auxiliary contact blocks can be mechanically snapped onto the relay housing to expand the available contact configurations beyond the base 3 NO / 1 NC arrangement.
Field Installation Guidelines
- Isolate and lock out all 24 VDC control supply power and high-voltage line feeds before installing or servicing the relay.
- Snap the contactor housing securely onto a standard 35 mm DIN rail or bolt directly to the enclosure mounting plate using screw fasteners.
- Strip control and power conductors to the specified length, inserting them into the heavy-duty screw terminals.
- Torque all terminal screws to the manufacturer-recommended torque rating to ensure low-resistance electrical connections and prevent thermal hot spots.
- Verify coil suppression polarity when connecting the 24 VDC control leads to prevent short circuits across DC power supplies.
