| Image | Part Number | Manufacturer | Description | Series | Mounting Type | Style | Number of Channels | Connector Type |
|---|---|---|---|---|---|---|---|---|
| PB-8M-C | Crydom | I/O MODULE RACK 8 CHANNEL | PB | Standoffs | Mini | 8 | Header, Screw Terminal Blocks | |
| 70RCK8-HS | Grayhill, Inc. | I/O MODULE RACK 8 CHANNEL | System 50 | Standoffs | Standard | 8 | Header, Screw Terminal Blocks | |
| PB-32Q | Crydom | I/O MODULE RACK 32 CHANNEL | PB | Standoffs | Quad | 32 | Card Edge, Screw Terminal Blocks | |
| 2972822 | Phoenix Contact | I/O MODULE RACK CHANNEL | - | - | - | - | - | |
| 2900190 | Phoenix Contact | I/O MODULE RACK CHANNEL | - | - | - | - | - | |
| 2900068 | Phoenix Contact | I/O MODULE RACK CHANNEL | - | - | - | - | - | |
| PB-32C4 | Crydom | I/O MODULE RACK 32 CHANNEL | PB | Standoffs | C4 | 32 | Header, Screw Terminal Blocks | |
| 2972932 | Phoenix Contact | I/O MODULE RACK CHANNEL | - | - | - | - | - | |
| 2900893 | Phoenix Contact | I/O MODULE RACK 8 CHANNEL | VARIOFACE, UM | DIN Rail | - | 8 | Screw Terminal Blocks | |
| 70MRCQ24-HS | Grayhill, Inc. | I/O MODULE RACK 24 CHANNEL | System 50 | Standoffs | Mini | 24 | Header, Screw Terminal Blocks |
I/O relay module racks are mounting structures or enclosures designed to accommodate multiple I/O relay modules in a compact and organized manner. These racks provide a centralized and easily accessible location for installing and wiring I/O relay modules, simplifying installation, troubleshooting, and maintenance tasks in control and automation systems.