Rittal SV 9677.110 Fuse-switch Disconnector - 3-Pole, 690 V, 250 A, 185 mm spacing
Part Number: 9677110
Manufacturer
Rittal
Part number
9677110
Category
Alt Part Number
SV 9677.110
Quick Summary
Rittal SV 9677.110 fuse-switch disconnector provides reliable isolation for NH busbar systems in switchgear and power distribution panels. Engineers often struggle with safe current transformer installations and space constraints in compact control cabinets; this device helps maintain clear, safe disconnection paths. It complies with IEC/DIN EN 60 947-3 and features a UL 94-V0 rated housing, supporting robust fire safety in demanding environments. Its 3-pole, 690 V, 250 A rating and 185 mm center-to-center spacing deliver dependable performance while preserving fault isolation clearances. The NH1-compatible design—plus top and bottom cable outlets—helps streamline wiring, installation, and future upgrades, delivering predictable lead times and reduced lifecycle costs for panel builders and system integrators.
Product Information
Extended Description
9677110 Rittal: SV NH slimline fuse-switch disconnector, size 1, 250 A, 690 V, 3-pole, bolt M12, 185 mm, single-pole, switchable, for current transformer installation
Article number
SV 9677.110
Design
single-pole, switchable
Material
Polyamide | Fire protection corresponding to UL 94-V0 | Contact tracks: Partially silver-plated hard copper
Colour
Chassis: RAL 7035 | Cover: RAL 7001 | Handle: RAL 7016
For NH size
1
For bar systems with centre-to-centre spacing
185 mm
Cable outlet
Top/bottom
Type of electrical connection
Bolt M12
Number of poles
3-pole
Rated operating voltage
690 V, 3~
Rated operating current max.
250 A
Note
When using components on busbars with contact hazard protection cover, the contact terminal must be used
Test specification
IEC/DIN EN 60 947-3
For converter installation
Yes
Dimensions
Width: 100 mm | Height: 670 mm
Connection for round conductor
6 ‐ 240 mm²
To fit busbars
Height: 10 mm
Packs of
1 pc(s).
Weight/pack
5.03 kg
Copper weight (kg per piece)
1.73
Customs tariff number
85365080
EAN
4028177705494
ETIM 9
EC001046
ECLASS 8.0
27371402
Product description
SV NH slimline fuse-switch disconnector, size 1, 250 A, 690 V, 3-pole, bolt M12, 185 mm, single-pole, switchable, for current transformer installation
Feature: NH1 slimline housing with 185 mm spacing. Business Impact: Enables tighter panel layouts, reducing cabinet width and allowing easier busbar routing. Application: 3-pole disconnectors in 690 V distribution panels and current transformer installations. Feature: 3-pole, 690 V, 250 A rating. Business Impact: High current handling with robust fault isolation, supporting critical loads and improving system reliability. Application: Medium- to high-power industrial applications requiring reliable isolation. Feature: Bolt M12 connection with top/bottom cable outlets. Business Impact: Flexible wiring options that simplify installation, termination, and future reworks. Application: Retrofit and new builds where wiring configuration varies by installation site. Feature: Polyamide housing with UL 94-V0 rating and partially silver-plated hard copper contact tracks. Business Impact: Enhanced fire safety, corrosion resistance, and lower contact resistance for long service life. Application: Harsh industrial environments and continuous operation scenarios. Feature: Compliance and interoperability with current transformer installations. Business Impact: Improves regulatory alignment and reduces integration risk when pairing with CTs and other protection devices. Application: Converter installations and transformer-fed switchgear in modern automation plants.
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FAQs
Install uses a bolt M12 connection with top and bottom cable outlets. Ensure the busbars match the 185 mm centre-to-centre spacing, and secure the unit to the NH1 mounting provisions. Verify all terminations are tightened to torque specifications and confirm compatibility with current transformer installations as noted in the product notes.
The device is a 3-pole fuse-switch disconnector rated for 690 V (3~) and 250 A. It fits NH size 1, uses bolt M12 connections, and supports conductor sizes 6–240 mm² with top/bottom cable outlets. It is designed for 185 mm spacing and is suitable for converter installations.
Yes. The model is specifically described as suitable for current transformer installations, with 3-pole isolation and a slimline NH design that accommodates CT wiring layouts and space-constrained switchgear environments.
The housing uses polyamide with UL 94-V0 fire protection, and the product is specified against IEC/DIN EN 60 947-3. These certifications support safety compliance in industrial electrical installations and compatible protection-level ratings.
The 5.03 kg packed weight and 1.73 kg copper weight indicate a durable, high-quality build for long service life. Its compact footprint reduces panel space, easing future upgrades and potentially lowering downtime costs through reliable isolation and straightforward servicing.