Bosch D203 Steel Security/Fire Module Enclosure, IP54 Dust/Splash Protection, 7.75″×5.2″×2.5″ (19.7×13.2×6.4 cm), Gray Finish

Bosch D203 Steel Security/Fire Module Enclosure, IP54 Dust/Splash Protection, 7.75″×5.2″×2.5″ (19.7×13.2×6.4 cm), Gray Finish, Cold-Rolled Steel, ~1.75 lb, For Through-Hole & Three-Point PCB Mounting (UPC 782695022016)

Condition: New without box. Unused; no mounting marks or scratches. Very faint cosmetic mark at the top-left of the cover only.

The Bosch D203 is a compact, gray steel enclosure designed to house Bosch input, output, and receiver interface modules that use through-hole or three-point PCB mounting. Sized for medium-capacity field modules, it provides solid physical protection, clean cable routing, and an IP54 rating against dust and splashing water—ideal for equipment rooms, utility closets, and light industrial spaces. Cold-rolled steel construction resists deformation, while the neutral gray finish blends with control panels and structured-cabling racks.

Features

• Compact steel housing: 7.75 in × 5.2 in × 2.5 in (19.7 × 13.2 × 6.4 cm), approx. 1.75 lb.

• IP54 rating: Helps protect electronics from dust ingress and water splashes.

• Robust, cold-rolled steel body with durable gray finish.

• Compatible mounting patterns: Supports through-hole and three-point module mounting schemes.

• Professional look: Clean, neutral cover suitable for visible installations.

• Service friendly: Removable cover for fast access to boards, wiring, and fuses.

Applications / Spheres of Use

• Intrusion & access control: Mount Bosch input/output expanders, receivers, relays.

• Fire alarm & supervision (per AHJ and listing of the installed boards).

• Building automation / low-voltage I/O interface points.

• Networking & telecom backboards: Protect PoE splitters, small power supplies, converters (within size limits).

• Industrial/HVAC controls: House small control/monitor modules near air handlers, RTUs, and pumps.

Specifications

• Model: D203

• Material: Cold-rolled steel

• Finish/Color: Gray

• External size: 7.75″ × 5.2″ × 2.5″ (19.7 × 13.2 × 6.4 cm)

• Approx. weight: 1.75 lb

• Ingress protection: IP54

• UPC: 782695022016

• Mounting: Supports through-hole and three-point PCB mounting styles

Cross-Referenced Models (Bosch enclosure family – size/function alternatives)

• B10 Small enclosure (modern B-Series small footprint)

• D8103 Universal steel enclosure (larger footprint)

• D8108A Attack-resistant enclosure (hardened, larger)

• D8109 Fire enclosure (red, larger, fire applications)

• B11/B12 and similar Bosch small enclosures (size/lock variants)
  These are not exact equivalents in size; they are common Bosch alternatives when different capacity or listing is required.

Comparable Products

• Small gray steel low-voltage enclosures from other security brands with similar IP and footprint.

• NEMA/Type 1 or IP54 general-purpose junction boxes sized for PCB mounting.

In Larger Systems / How It’s Used

Mount the D203 to a wall or backboard, bring your low-voltage wiring through the knockouts or grommets, and fasten the module’s PCB using the through-hole or three-point pattern. Close the cover to protect the electronics from dust and incidental splashes while keeping service access quick and tidy. Typical installs include alarm panels, I/O expanders, receiver modules, relays, or small power/communication interfaces.

Trademarks

Bosch is a trademark or registered trademark of Robert Bosch GmbH and/or its affiliates. All other product names are the property of their respective owners and are used strictly for identification purposes.

Related

bosch d203 enclosure; gray steel module box; ip54 security enclosure; small control panel housing; 7.75×5.2×2.5 metal box; cold rolled steel junction box; device to protect low-voltage modules; bosch mounting enclosure medium capacity; through-hole pcb enclosure; structured cabling equipment box

Common Requests:

1. “Will the D203 fit my specific Bosch input/output/receiver module dimensions?”

2. “Is IP54 adequate for my mechanical room or should I step up to a higher NEMA rating?”

3. “Do you have the larger D8103/D8108A/D8109 enclosures in stock?”

4. “What mounting hardware and grommets are recommended for cable entry?”

5. “Can you provide multiple units for uniform cabinet layouts?”

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