Introduction to the Ajax DIN Holder 51170.132.BL and its key features
Ajax DIN Holder (51170.132.BL)is a purpose-built, compact bracket designed to mount Ajax Relay and WallSwitch modules on a standard 35 mm DIN rail. Made from durable black polycarbonate, this holder combines a low-profile footprint (52 × 41 × 18 mm) with tool-less, side-hinge mounting for fast installation and removal. It includes a sticker set for neat circuit labelling and a built-in manual control button that supports both toggle (bistable) and pulse modes for local relay control. Lightweight and ventilated, it is intended for neat, safe mounting inside distribution boards, server cabinets and other electrical enclosures.
- Compatibility:Specifically designed to fit Ajax Relay and WallSwitch modules.
- Tool-less mounting:Side-hinge clip for standard 35 mm DIN rail — quick install and removal.
- Material:Black polycarbonate housing with passive ventilation to help limit overheating.
- Manual control:Built-in button for local relay operation in toggle or pulse modes.
- Compact size:Single-breaker width footprint — 52 × 41 × 18 mm and approx. 9 g weight.
- Accessories:Sticker set for circuit marking included.
Detailed specifications and benefits
The Ajax DIN Holder is engineered with practical installation and everyday reliability in mind. Below are the key technical specifications and what they mean for installers and end users.
- Manufacturer / Model:Ajax (Ajax Systems) — 51170.132.BL (DIN Holder).
- Material:Polycarbonate (black) — impact resistant and electrically insulating.
- Mounting:Standard 35 mm DIN rail with tool-less side hinge for fast snap-on installation.
- Dimensions:52 × 41 × 18 mm — compact footprint suitable for tight distribution boards.
- Weight:Approx. 9 g — very lightweight to minimize load on rails and enclosures.
- Operating temperature:−25 °C to +60 °C — suitable for most indoor installations.
- Relative humidity:Up to 75% — covers typical indoor environmental conditions.
- Includes:Sticker set for circuit labelling; built-in manual control button.
- EAN / Colour:EAN 4823114018589 / black finish for discreet installation.
Benefits arising from these specifications include rapid deployment, reduced labour time and a consistently neat appearance in mounted installations. The polycarbonate body offers a balance of robustness and lightness, helping avoid corrosion issues that can affect metal alternatives and maintaining a non-conductive barrier around the mounted module. Passive ventilation slots reduce the risk of heat accumulation around power modules, which can be critical when multiple devices are grouped in a single enclosure.
The built-in manual button is particularly useful for local overrides during commissioning, testing, or emergency operation when the main control system is unavailable. Supporting both toggling and pulse control means the holder doesn’t limit how the underlying Ajax device is used — it simply provides a convenient local interface.
Use cases and scenarios where the Ajax DIN Holder excels
This DIN holder is designed for environments where compact, clean and safe mounting is required. Typical scenarios include:
- Residential distribution boards:Home automation or security installations that require Ajax Relay or WallSwitch units to be mounted neatly among breakers and other modules.
- Commercial electrical panels:Office fit-outs, retail installations and light industrial sites where space on DIN rails is at a premium and tidy labelling is important.
- Server racks and telecom cabinets:When Ajax power modules need to be integrated into server rooms or comms closets, the compact holder keeps the footprint minimal and allows for adequate airflow.
- Security and alarm installations:Security installers benefit from the tool-less mounting and included labelling set, making on-site changes and service visits faster.
- DIY and small trades:Electricians and knowledgeable DIYers appreciate the straightforward snap-on fitting and local manual control for testing.
Because the holder is built specifically for Ajax Relay and WallSwitch models, compatibility issues are minimized and installers can expect a consistent fit and alignment for wiring and manual control access.
Comparisons with similar products on the market
When selecting a DIN-rail holder, buyers commonly weigh material, mounting method, ventilation, and accessory inclusion. Here’s how the Ajax DIN Holder stacks up against typical alternatives:
- Polycarbonate vs metal holders:Polycarbonate is non-conductive and resistant to corrosion, which is an advantage in residential and indoor commercial settings. Metal holders may offer greater mechanical strength in certain industrial contexts but can introduce conduction and corrosion considerations without coating.
- Tool-less clip vs screw-fixed holders:Tool-less side-hinge mounting speeds installation and removal, reducing labour time. Screw-fixed holders can provide a marginally more permanent attachment but require tools and extra effort during service or rearrangement.
- Passive ventilation vs sealed enclosures:The Ajax holder includes passive ventilation to reduce heat build-up for mounted electronic modules. Fully sealed holders may protect against dust and moisture but can cause higher internal temperatures unless properly rated for the application.
- Purpose-built vs universal DIN adapters:Purpose-built holders like the Ajax 51170.132.BL deliver a precise fit and integrated manual control for Ajax modules. Generic adapters might fit more device types but often lack tailored features such as a built-in manual button or matching aesthetic and alignment.
Overall, for users who have Ajax power modules and need a tidy, feature-rich mounting option, this holder offers a strong balance of convenience and function compared with many generic alternatives.
Customer feedback and installer impressions
While individual reviews vary by installation context, common themes among installers and users of similar Ajax mounting accessories include praise for the simplicity of the tool-less mounting, the small footprint that helps maximize space on busy DIN rails, and the convenience of the included labelling stickers. Typical feedback includes observations that the holder makes maintenance quicker because modules can be removed without unscrewing brackets, and that the manual button is handy during commissioning and troubleshooting.
Installers also note that the black polycarbonate finish blends unobtrusively into most distribution boards and that passive ventilation is a practical compromise for indoor, temperature-controlled environments. Some users point out that, as with many compact holders, attention should be paid to spacing if high-current or heat-generating devices are mounted nearby.
Conclusion — why the Ajax DIN Holder 51170.132.BL is a solid choice
The Ajax DIN Holder 51170.132.BL is a focused accessory designed to make mounting Ajax Relay and WallSwitch modules faster, neater and more practical. Its compact dimensions (52 × 41 × 18 mm), tool-less 35 mm DIN-rail side-hinge mounting, durable polycarbonate construction and built-in manual button combine into a product that suits electricians, security installers and informed DIYers alike. It simplifies installations in residential and commercial enclosures while providing useful conveniences like passive ventilation and labelling stickers.
From a cost perspective, the supplied figures (cost price: 5.33; suggested price: 6.35) indicate an affordable, low-cost accessory that adds value by reducing installation time and supporting neat, code-friendly installations. Warranty is not specified and customers should refer to the official Ajax product documentation for compliance details, CE/UKCA markings and installation guidance. As with any electrical accessory, installation should follow local regulations and be carried out by qualified personnel where required.
In short, if you use Ajax Relay or WallSwitch modules and want a compact, professional-looking, easy-to-service mounting solution, the Ajax DIN Holder 51170.132.BL is a practical and efficient choice.
