Cembre 2843707 DB250-11/1N single-pole distribution block rated at 250 A, with one incoming terminal, 11 outgoing connections and DIN rail or panel mounting.
£50.10
The Cembre 2843707 DB250-11/1N is a heavy-duty single-pole power distribution block designed to distribute one incoming electrical supply across multiple outgoing circuits. Part of the professional Cembre DBLOCK series, it provides an organised and dependable wiring solution for industrial control panels, switchboards and low-voltage power distribution assemblies.
Rated for an operating current of 250 A, the DB250-11/1N combines one high-capacity incoming terminal with 11 outgoing connections. Its direct-clamping terminals, conical conductor entry points and pre-loosened captive screws simplify cable installation while helping create secure, stable and low-resistance electrical connections.
The conductive body is manufactured from electrolytically tin-plated brass for excellent conductivity and corrosion resistance. A halogen-free PA6.6 insulating body and transparent polycarbonate cover provide robust electrical insulation, visibility of the connections and IP20 protection. The block may be mounted on a standard 35 mm DIN rail or directly onto a panel.
Power distribution blocks provide a central point for dividing a large incoming conductor into several smaller outgoing circuits. This reduces wiring congestion, limits the need for multiple cable joints and helps produce a cleaner, more accessible electrical panel.
The Cembre DB250-11/1N uses direct-clamping connections with captive screws and conical conductor entries to make wiring faster and more consistent. Its high current and withstand ratings make it suitable for demanding industrial systems where dependable power distribution and mechanical connection strength are essential.
| Current | 250 A |
|---|---|
| Phase | Single Phase |
| IP Rating | IP20 |
| Manufacturer | Cembre |
| Series | DBLOCK DB/1N |
| Model | DB250-11/1N |
| Manufacturer part number | 2843707 |
| Product type | Single-pole distribution block |
| Operating current | 250 A |
| Number of poles | 1 |
| Number of outgoing ways | 11 |
| Voltage rating | 1000 V |
| Rated impulse withstand voltage (Uimp) | 1000 V |
| Rated short-time withstand current (Icw) | 24.5 kA |
| Rated peak withstand current (Ipk) | 51 kA |
| Input connection capacity | 1 × 35 to 120 mm² rigid or flexible |
| Output connection capacity | 5 × 2.5 to 16 mm², 4 × 2.5 to 10 mm² and 2 × 6 to 35 mm² rigid or flexible |
| Input hole | 1 × 15 mm |
| Output holes | 4 × 6.1 mm, 5 × 6.8 mm and 2 × 9 mm |
| Clamping type | Direct clamping |
| Conductor body material | Brass |
| Conductor surface treatment | Electrolytic tin plating |
| Insulating body material | Polyamide PA6.6 |
| Cover material | Transparent polycarbonate |
| Clamping element material | Zinc-plated steel |
| Flammability rating | UL94 V0 |
| Halogen free | Yes |
| Ingress protection | IP20 |
| Dimensions (H × W × L) | 96 × 46 × 50 mm |
| Mounting type | 35 mm DIN rail or panel mounting |
| Approvals | CE, UKCA and UL recognised |
| Applicable standards | EN 60947-7-1 and UL 1059 |
It is used to distribute one high-current incoming electrical supply to multiple outgoing circuits within control panels, switchboards and power distribution equipment.
The distribution block has a rated operating current of 250 A.
The Cembre DB250-11/1N provides 11 outgoing connections from one incoming terminal.
The incoming terminal accepts conductors from 35 to 120 mm². Its outgoing terminals accommodate conductor sizes ranging from 2.5 to 35 mm², depending on the selected connection.
It can be installed on a standard 35 mm DIN rail or fixed directly to a mounting panel using suitable screws.
Cembre DBLOCK distribution blocks are trusted by panel builders, electrical engineers and machinery manufacturers to provide safe, organised and reliable high-current power distribution within industrial electrical systems.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...