Rittal SV 9666.550 NH fuse-switch disconnector module - 185 mm bus spacing
Part Number: 9666550
Manufacturer
Rittal
Part number
9666550
Alt Part Number
SV 9666.550
Quick Summary
Rittal SV 9666.550 NH fuse-switch disconnector module isolates circuits in industrial switchgear. Engineers often struggle with reliable cable connections and modular expandability in growing control cabinets. This module supports CE conformity and compatibility with established safety standards, while integrating with N/PE busbar modules for safe, hazard-free connections. Its 2 WU x 5 U footprint and 185 mm busbar spacing enable scalable cabinet layouts, with 40 x 10 mm busbars for robust power distribution. Designed for durability and serviceability, it reduces commissioning time and lifecycle costs, helping maintenance teams meet tighter project schedules while maintaining system reliability. This makes upgrades easier and reduces downtime during cabinet expansions.
Product Information
Extended Description
9666550 Rittal: SV NH fuse-switch disconnector module (ISV), 2 WU (500 mm), 5 U (750 mm), for 8 x size 00, 4 x size 1-3, (SV 9346XXX, 185 mm)
Article number
SV 9666.550
Product description
For NH slimline fuse-switch disconnectors, sizes 00 to 3 (3-pole, 100/185 mm bar centre distance).
Material
Cover: Polystyrene | Holder: Fibreglass-reinforced plastic
Colour
RAL 7035
Supply includes
Assembly parts
Note
In order to ensure problem-free cable connection, a contact hazard protection module or an N/PE busbar module must be installed above or below the NH slimline fuse-switch disconnector modules.
Dimensions
Width: 500 mm | Height: 750 mm
Size
Width units (WU) @ 250 mm: 2 | Height units (U) @ 150 mm: 5
For size
8 x Gr. 00
To fit Model No.
9677.XXX
To fit busbars
40 x 10 mm
Centre-to-centre spacing of busbars
185 mm
Packs of
1 pc(s).
Weight/pack
3.9 kg
Customs tariff number
85369095
EAN
4028177676435
ETIM 9
EC002525
ECLASS 8.0
27400608
Product description
SV NH fuse-switch disconnector module (ISV), 2 WU (500 mm), 5 U (750 mm), for 8 x size 00, 4 x size 1-3, (SV 9346XXX, 185 mm)
Feature → Business Impact → Application: The SV 9666.550 provides a 2 WU x 5 U footprint, enabling compact yet scalable installation in switchgear housings, reducing panel depth and simplifying ladder routes. This translates to lower enclosure footprints and faster assembly, especially in space-constrained control cabinets found in automation lines. Application: Ideal for mid-range NH slimline fuse-switch disconnectors and modular busbar configurations, improving fault isolation and serviceability in modernization projects.Feature → Business Impact → Application: 185 mm busbar centre-to-centre spacing supports standard 40 x 10 mm busbars, enabling robust, low-resistance current paths and straightforward cable management. Application: Suitable for 8 x size 00 and 4 x size 1-3 configurations, aligning with SV 9346XXX components and simplifying spare-part compatibility in established plants.Feature → Business Impact → Application: Assembly parts supplied with the module streamline installation and reduce on-site guessing, leading to faster commissioning and fewer field errors. Application: Beneficial for turnkey projects and OEM cabinet builds where repeatability and quick turn-around are critical for ROI.Feature → Business Impact → Application: Contact hazard protection and N/PE busbar integration help meet safety requirements and regulatory expectations, reducing risk during maintenance. Application: Particularly valuable in environments with frequent access for testing, diagnostics, or routine replacement of fuse-switch elements.Feature → Business Impact → Application: Durable materials (Polystyrene cover; Fibreglass-reinforced holder) deliver long-term resilience against vibration and temperature fluctuations. Application: Suitable for industrial enclosures in manufacturing and process industries where reliability and cabinet longevity are essential.Feature → Business Impact → Application: Standardized dimensions (500 mm width, 750 mm height) enable predictable planning and easier cabinet upgrades over time. Application: Supports scalable architectures for expanding control systems without redesigning enclosure layouts.
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FAQs
SV 9666.550 is designed for 2 WU x 5 U installations and supports 8 x size 00 and 4 x size 1-3 configurations. It uses 40 x 10 mm busbars with an 185 mm centre-to-centre spacing, matching SV 9346XXX components. Installers should place a contact hazard protection module above/below the module to ensure safe cable connections, then secure the assembly with the included parts.
Key specs include a width of 500 mm and height of 750 mm, 2 WU x 5 U sizing, and busbars sized 40 x 10 mm with 185 mm centre-to-centre spacing. The module is intended for 8 x size 00 and 4 x size 1-3 configurations and ships as a single pack with dimensions that fit standard Rittal enclosures.
Yes. The SV 9666.550 is built for NH slimline fuse-switch disconnectors in 3-pole arrangements, with a 185 mm bus spacing suitable for 3-pole configurations. This supports reliable isolation within compact, scalable switchgear and aligns with SV 9346XXX series components for cohesive cabinet architectures.
The module is designed to meet CE conformity and general EU safety expectations for control cabinets. It also adheres to ETIM 9 (EC002525) and ECLASS 8.0 (27400608) classifications, supporting consistent data tagging and procurement workflows in EU and global projects.
With a standardized footprint, included assembly parts, and compatibility with hazard-protection modules, maintenance becomes faster and more predictable. The robust materials and modular design reduce rework, shorten commissioning, and simplify future upgrades, delivering lower lifecycle costs and higher system availability in automation facilities.