National Instruments Corporation NI 9481 4-Ch 30 V, 60 V, 250 VAC EM Form A SPST Relay
- For new designs, National Instruments recommends using the NI 9482.
- 4-channel, EM Form A electromechanical relay outputs
- 30 VDC (2 A), 60 VDC (1 A), 250 VAC (2 A) SPST relay
- 250 Vrms channel-to-channel isolation
- -40 C to 70 C operating range
- Hot-swappable operation
- Configure Complete CompactRIO or NI CompactDAQ System
- View Data Sheet | Specifications
The NI 9481 is a C Series relay module manufactured by National Instruments. It features four channels, each with a Form A (SPST) electromechanical relay. The module supports switching up to 30 VDC at 2 A, 60 VDC at 1 A, or 250 VAC at 2 A per channel. Designed for use with CompactDAQ and CompactRIO systems, the NI 9481 provides channel-to-channel isolation and is suitable for switching industrial-level signals and loads. The module is hot-swappable and offers screw-terminal connectivity for secure wiring. It is ideal for applications requiring reliable switching of high-voltage or high-current signals in automation, control, and monitoring systems.