Product overview and engineering role
Built for dense I/O and communications slices inside a control cabinet. Standard DIN-rail clips, split end covers, and a label field make it practical to add or service modules in a distribution cabinet.
The insulating, lightweight engineering plastic can share a cabinet with low-voltage control circuits. Flame rating and CTI are stated in the hardware specification. Inside an outdoor cabinet, UV and temperature still need a separate check.
Reliability and site fit
Rail vibration and temperature cycling can creep a clip. Fit a retaining clip and check that modules have not worked loose.
Next to a drive or a contactor, shield and ground the terminal strip so induced voltage does not false-trigger a digital input.
Key hardware parameters
Use this table for the typical order when you write a selection note or a bid clause. A wider span, redundant supply, or an intrinsically safe build is quoted separately, with the hardware specification and the commissioning guide. Sibling order codes can shift slightly; follow the nameplate and the papers packed with the enclosure.
| Parameter | Specification | Notes |
|---|---|---|
| Material | ABS+PC | Flame rating, CTI, and RoHS are in the hardware specification |
| Ingress protection | Typically IP20～IP54 | Depends on the end-cover and seal order code; cabinet-interior and outdoor-cabinet duty need separate checks |
| Mounting and outline | 35 mm DIN rail; width by module pitch | Common pitches, for example 2～12 positions; length, width, and height follow the outline drawing; cutouts and silk-screen can be customized |
| Cover | Molded snap end cover | Opaque or clear; the snap must seat so dust stays out of the terminals |
| Cooling | Mainly natural convection | Heat also conducts from the shell into the rail; keep hot parts spaced or add a baffle; temperature rise is by measurement |
| EMC | Insulating plastic shell | Near a drive: shielded cable, grounding, and wiring zones follow the installation guide; a shielding kit is optional by order code |
| Mechanical load | Within the rated load of the rail clip | A single box is a light module-level mass; do not load it as a cantilever; see the nameplate and specification |
| Approvals and tests | Flame and material tests | UL94, flammability, and ball-pressure tests follow the specification and the certificate list (salt spray is the main item for a non-metal cabinet) |
| Color | Industrial gray (often near RAL7035) | Usually the molded color or a color concentrate; check a sample chip when it sits beside a painted metal cabinet |
| Grounding | PE brought to the rail or a ground terminal | Bond as shown on the wiring diagram shipped with the unit; a high-current copper bus is not a typical fit for this small module box |
Typical applications
Four cabinet jobs this enclosure is usually bought for:
Remote I/O slices
Each analog or digital slice has its own box, so a fault stays local and a swap is faster.
Protocol converters
A small DIN-rail package for serial or fieldbus to Ethernet.
Auxiliary relay groups
Sits beside the PLC, with one color code and one wire-number scheme.
Safety and interlock add-ons
Safety relays or interlock contacts in a modular shell, with a nameplate that is easy to audit.
Installation, grounding, and maintenance
- Deburr the cut rail so modules slide freely and sit square.
- Separate power and signal terminals, and keep wire numbers facing the same way for a walk-through.
- Seat the cover snap so dust and metal chips stay out of the terminal strip.
- Space a warm module away from hot parts, or add a baffle.
- After a batch swap, recheck address DIP switches and labels so the logic does not land on the wrong slice.
Ordering, documentation, and support
Outline drawings, a wiring table, the hardware specification, and a sample project come with the enquiry. Volume orders can include a sample review and an in-plant inspection. Warranty and calibration are set by the contract and the documents in the carton.