



CFP-RLY-421 | National Instruments Relay Output Module
- Regular price
- $694.00
- Sale price
- $694.00
- Regular price
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Product Description P/N: CFP-RLY-421
Description
The National Instruments CFP-RLY-421 is an 8-channel relay output module designed for Compact FieldPoint systems. Each channel features a single-pole single-throw (SPST), normally open relay capable of switching up to 1.5 A at 40 VDC or 250 VAC. It provides reliable and isolated control for industrial automation applications, supporting hot-swappable installation for enhanced flexibility and system uptime.
Technical Specifications
Condition | New/Never Used Surplus |
Brand | National Instruments |
Category | PLCs/Machine Control |
Part Number | CFP-RLY-421 |
Subcategory | PLC Module/Rack |
Weight | 0.14 kgs |
Number of Channels | 8 |
Relay type | SPST, nonlatching, normally open |
Maximum Switching Capacity per Channel |
At 250 VAC - 1.5 A at – 40 to 45 °C At 40 VDC - 1.5 A at – 40 to 45 °C |
Minimum Switching Load | 10 mA at 5 VDC |
Maximum Switching Power | AC - 375 VA; DC - 60 W |
Operating Temperature | – 40 to 55 °C |
Storage Temperature | –55 to 85 °C |
Humidity | 10 to 85% RH, non-condensing |
Information About CFP-RLY-421
The National Instruments CFP-RLY-421 is an 8-channel, single-pole single-throw (SPST), non-latching, normally open (NO) relay output module designed for Compact FieldPoint systems. It facilitates the switching of general-purpose signals and loads, supporting up to 1.5 A at 40 VDC or 250 VAC per channel.
Key Features:
- Channels: 8 independent SPST, non-latching, normally open relays.
- Switching Capacity: Up to 1.5 A at 40 VDC or 250 VAC per channel.
- Relay Operate Time: Approximately 8 ms.
- Relay Release Time: Approximately 4 ms.
- Isolation: Transient isolation between output channels and backplane.
- Hot-Swappable: Supports hot-swapping for easy installation and maintenance.
- Compatibility: Designed for use with Compact FieldPoint backplanes (cFP-BP-x) and connector blocks (cFP-CB-x).
Applications: The cFP-RLY-421 is suitable for a wide range of industrial automation applications, including:
- Device Control: Switching actuators, valves, and other industrial devices.
- Signal Switching: Managing general-purpose AC and DC signals within control systems.
- Load Management: Controlling power to various loads in automated processes.
Description
The National Instruments CFP-RLY-421 is an 8-channel relay output module designed for Compact FieldPoint systems. Each channel features a single-pole single-throw (SPST), normally open relay capable of switching up to 1.5 A at 40 VDC or 250 VAC. It provides reliable and isolated control for industrial automation applications, supporting hot-swappable installation for enhanced flexibility and system uptime.
Technical Specifications
Condition | New/Never Used Surplus |
Brand | National Instruments |
Category | PLCs/Machine Control |
Part Number | CFP-RLY-421 |
Subcategory | PLC Module/Rack |
Weight | 0.14 kgs |
Number of Channels | 8 |
Relay type | SPST, nonlatching, normally open |
Maximum Switching Capacity per Channel |
At 250 VAC - 1.5 A at – 40 to 45 °C At 40 VDC - 1.5 A at – 40 to 45 °C |
Minimum Switching Load | 10 mA at 5 VDC |
Maximum Switching Power | AC - 375 VA; DC - 60 W |
Operating Temperature | – 40 to 55 °C |
Storage Temperature | –55 to 85 °C |
Humidity | 10 to 85% RH, non-condensing |
Information About CFP-RLY-421
The National Instruments CFP-RLY-421 is an 8-channel, single-pole single-throw (SPST), non-latching, normally open (NO) relay output module designed for Compact FieldPoint systems. It facilitates the switching of general-purpose signals and loads, supporting up to 1.5 A at 40 VDC or 250 VAC per channel.
Key Features:
- Channels: 8 independent SPST, non-latching, normally open relays.
- Switching Capacity: Up to 1.5 A at 40 VDC or 250 VAC per channel.
- Relay Operate Time: Approximately 8 ms.
- Relay Release Time: Approximately 4 ms.
- Isolation: Transient isolation between output channels and backplane.
- Hot-Swappable: Supports hot-swapping for easy installation and maintenance.
- Compatibility: Designed for use with Compact FieldPoint backplanes (cFP-BP-x) and connector blocks (cFP-CB-x).
Applications: The cFP-RLY-421 is suitable for a wide range of industrial automation applications, including:
- Device Control: Switching actuators, valves, and other industrial devices.
- Signal Switching: Managing general-purpose AC and DC signals within control systems.
- Load Management: Controlling power to various loads in automated processes.

