Modularity
Power tap-off along the entire length — connection points per project.
Tap-off units for data centers OB-250M and AI-125M
Power tap-off point on busbar trunking
Key features
Compactness
Housings for dense, organized machine hall layout.
Flexibility
Reconfiguration and capacity expansion without cable rework.
Serviceability
Plug-in connection simplifies installation and maintenance of units.
Data Center Server Room Power Distribution
Data centers impose high requirements on power distribution systems in terms of power density, mobility, and serviceability. The METAENERGY busbar trunking system with tap-off units allows power extraction at any point along the server room route and load expansion without cable replacement. Key components: OB-250M and AI-125M tap-off units.
Cable System
- Limited flexibility when reconfiguring racks
- Increased cable volume during upgrades
- More difficult to maintain server room compactness
Busbar Trunking with Tap-Off Units
- Modular power extraction along entire line length
- Reconfiguration and maintenance without cable replacement
- Compact and organized power system
Installation on Distribution Line
Plug-in tap-off units are installed on dedicated power extraction windows of busbar trunking straight sections. On sections with installed units, tap-off spacing is determined by the project and the dimensions of the selected unit.
Minimum straight section length with OB-250 tap-off unit is 1000 mm. Available with or without pre-installed circuit breakers.
The tap-off unit is a key component of distribution busbar trunking. It ensures safe power extraction to racks, panels, and server room equipment. METAENERGY supplies compact modular units rated up to 250 A.
Products
This page features modular tap-off units OB-250M and AI-125M for data center server room power networks. Ratings, configurations, and components are selected per project.
Page focus: compact AI-125M for point loads and modular OB-250M up to 250 A. Selection tables on this page also include related OB-250/OB-630 configurations. Size, configuration, and enclosure color per project.
8701 02 02 · OB-250M
Modular Tap-Off Unit for Server Room
Compact modular unit for installing low and medium power circuit breakers on busbar trunking distribution lines. Plug-in connection to section.
- Rated current — series up to 250 A
- Enclosure dimensions 400×250×250 mm
- MG cable gland configuration — per project cable specification
- Enclosure color — per RAL (standard — RAL 7035)
For designers: number and ratings of tap-off points, tap-off spacing, cable entry type (MG-series).
AI-125M · compact tap-off unit
Tap-off unit AI-125M
Compact tap-off unit for low-power tap-off points — racks, distribution panels, auxiliary equipment in the data hall.
- Rated current — up to 125 A
- Enclosure dimensions 428×140×135 mm
- PUSH handle, inspection window, CEE socket, cable entry
- Enclosure color — custom RAL as required
For designers: tap-off density, rack load type, cable entry requirements.
Sizes and Selection
Standard sizes of tap-off units and selection of cable glands for project load.
Designations and Dimensions
| Article | Designation | Enclosure dimensions, L×W×H, mm |
|---|---|---|
| 8701 02 00 | Tap-off unit OB-250 | 400×250×250 |
| 8701 02 01 | Tap-off unit with handle OB-250R | 400×250×300 |
| 8701 02 02 | Modular tap-off unit OB-250M | 400×250×250 |
| 8701 06 00 | Tap-off unit OB-630 | 550×330×280 |
| 8701 06 01 | Tap-off unit with handle OB-630R | 550×330×330 |
Cable and Gland Selection (OB-250)
| CB current | MG cable glands | Connected cable |
|---|---|---|
| 32–100 A | 5×(MG-16); 1×(MG-20…MG-50) | VVG-ng 1×3…1×16; KG 5×6–5×16 |
| 125–160 A | 5×(MG-20); 1×(MG-50…MG-63) | VVG-ng 1×25 and 1×35; KG 5×25–5×35 |
| 200–250 A | 5×(MG-25); 1×(MG-63) | VVG-ng 1×50 and 1×70; KG 5×50–5×70 |
Model comparison
Quick reference for selecting the size.
| Parameter | OB-250M | AI-125M |
|---|---|---|
| Application | Modular tap-off 125–250 A | Compact tap-off up to 125 A |
| Dimensions (L×W×H), mm | 400×250×250 | 428×140×135 |
| Connection type | Plug-in to busbar trunking section | Plug-in to busbar trunking section |
| Modularity | Up to 8 low-power circuit breakers | Compact design for point loads |
| Application | Distribution lines for data centers, main distribution boards, industrial facilities | Power networks for server rooms, racks, auxiliary loads |
| Part number | 8701 02 02 | on request |
Tap-off units OB-250M and AI-125M
Modular power tap-off units up to 250 A — part of the METAENERGY busbar trunking system for server room power networks.
Advantages
Key features of tap-off units for server rooms.
Ratings up to 250 A
OB-250M — up to eight low-power circuit breakers per unit; AI-125M — compact tap-off for racks and auxiliary loads.
Busbar trunking compatibility
Operates with IP68 main lines and IP55 distribution networks by METAENERGY.
Custom configuration
Cable gland sealing, terminals, and unit sealing — according to project specifications.
Additional for designers
Reliable connection
Copper terminals with silver plating, flexible busbars for connecting circuit breakers.
Project-specific configuration
Cable glands, inlet sealing, and configuration are selected according to customer requirements.
Integrated system
Tap-off units are compatible with METAENERGY IP55 and IP68 main and distribution busbar trunking.
Factory configuration
Cable glands, terminals, and junction sealing are coordinated before production, reducing on-site modifications.
Documentation
Specification, datasheet, and junction drawings are included in the delivery package for design and installation.
Position in the METAENERGY product range
Tap-off units operate as part of the METAENERGY busbar system — from IP68 main lines to IP55 distribution networks in the server room.
Main networks
1000–6300 A
Cast-resin busway IP68 — outdoor and main line applications.
Distribution networks
250–7500 A
Busbar trunking in aluminum housing IP55 — main and distribution lines.
Server room power distribution
up to 250 A
Modular tap-off units OB-250M and AI-125M for server equipment connection.