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Overview
- 27 kV/20 kA rating with 125 kV BIL transient protection
- 600 Amp interface with fully shielded construction
- Submersible and corrosion-resistant design for harsh environments
- Includes ground connector, ground cable, linkage kit, mounting clips, switch handle, insulating plugs, and studs
- Operating temperature range: -40°C to +65°C
- Dimensions: 21" depth, 20.25" width, 28" height
- Meets IEEE C37.74 and IEEE 386 standards
- Compatible with ABB MVS3 switchgear systems
Specifications
Amperage Rating | 600 A |
Connection Type | 600 Amp Interfaces |
Current Rating | 20 kA |
Frequency | 50/60 Hz |
Material | Corrosion Resistant, Fully Shielded |
Mounting Type | Submersible |
Operating Temperature | -40 to +65 C |
Series | Tru-Break |
Size | 21 inch (Depth) x 20-1/4 inch (Width) x 28 inch (Height) |
Special Features | 20kA Rated with 600 Amp Interface |
Standard | IEEE C37.74 , IEEE 386 |
Type | Tru-Break Module |
Voltage Rating | 27 kV |
Package Dimensions (L x W x H) | 0.01 IN x 0.01 IN x 0.01 IN |
Package Dimensions (L x W x H) | 0.0254 cm x 0.0254 cm x 0.0254 cm |
Package Weight (Imperial) | 1.0000 L |
Package Weight (Metric) | 0.4540 kg |

TB27-20-6-R-I-N-S
Tru-Break Interlock Linkage Kit for MVI, Nominal Voltage: 27kV, Withstand Current: 20kA (SYM), Continuous Current: 600 Amps, Handle Position: Right, Mating Device: MVI3, Electrical Interlock : None, Spanish Labels and Instructions
TB27-20-6-R-I-DC
Tru-Break Module, Nominal Voltage: 27 kV, Withstand Current: 20 kA (SYM), Continuous Current: 600 Amps, Handle Position: Right, Mating Device: MVI3, Electrical Interlock: DC
TB27-20-6-R-S-DC
Tru-Break Module, Nominal Voltage: 27 kV, Withstand Current: 20 kA (SYM), Continuous Current: 600 Amps, Handle Position: Right, Mating Device: MVS3, Electrical Interlock: DC
LB28SST-TB
3/4 Inch 316 Stainless Steel Form 8 (LB) Conduit Body, Gasket and Cover with Polished FinishFrequently Asked Questions
What are the dimensions of the single-phase module?
The single-phase module is approximately 20 in high, 6.44 in wide, and 11.27 in deep, weighing 25 lb.
What are the voltage and current ratings?
The Tru-Break module is rated for 15–29.3 kV systems, 800 A continuous load current, and 20 kA short circuit withstand current.
What types of systems is the module available for?
The Tru-Break switchgear module is available in both three-phase and single-phase models.
What is the impulse voltage withstand rating?
The module is capable of withstanding a full 125 kV basic insulation level (BIL) impulse voltage.
What environments is the module designed for?
It is submersible and storm-hardened, designed for use in harsh vault and pad-mount environments.
What type of connection interface does it use?
It uses an IEEE 386 600-amp interface bolted connection. ANSI/IEEE standard 600-amp bolted connection points are available.
What Elastimold products are compatible with this option?
It is compatible with 1-phase or 3-phase MVS molded vacuum switches and MVI molded vacuum interrupters at 15 kV and 27 kV.
Does the Tru-Break module require maintenance?
No, it is considered maintenance-free because it contains no oil or gas to monitor or maintain.
What safety features does the module include?
It features dead-front construction, clear visual verification of circuit isolation, and a positive-latching handle.
What are the dimensions of the three-phase module?
The three-phase module is approximately 20 in high, 20.28 in wide, and 16.12 in deep, weighing 97 lb.
Frequently Asked Questions about ABB - Installation Products
How are Thomas and Betts products typically installed?
Thomas and Betts products are installed using a variety of methods tailored to specific applications, including the use of flexible cords and cable fittings, non-metallic cable glands, and armored cable fittings. Proper selection of fittings is crucial to match the cable type and installation environment, ensuring durability and preventing physical damage. Tools such as the Blackburn® Comfort Crimp® and HEX-FLEX® systems enhance installation efficiency and reliability, reducing labor time and ensuring secure connections.
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Thomas and Betts offers a comprehensive range of accessories for their products, including various cord and cable fittings, non-metallic cable glands, service entrance cable fittings, and armored cable fittings. Their accessories are designed to enhance installation efficiency and ensure compatibility with different cable types and environmental conditions, providing reliable connections for a wide array of applications.
What environmental ratings do Thomas and Betts products have?
Thomas and Betts products feature robust environmental ratings, including NEMA Type 1, 2, 3, 4, 4X, 12, and 13 certifications, as well as IEC 60529 IP66 protection. These ratings ensure that their products are designed to withstand harsh industrial environments, with capabilities to resist dust, water, and corrosion, and operate effectively in a wide temperature range.
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Thomas and Betts products support a wide range of industrial communication protocols, including Ethernet, DeviceNet, PROFIBUS, Modbus, CANopen, and others. This extensive compatibility ensures seamless integration and reliable communication across various industrial automation systems, catering to diverse application needs.
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Thomas and Betts products are known for their innovative designs, high performance, and compliance with industry standards such as the National Electrical Code and Underwriters' Laboratories. They offer a comprehensive range of rugged and reliable electrical fittings, including liquidtight and dust-tight connections, which enhance installation efficiency and reduce overall project costs. Their products are engineered for durability in harsh environments, ensuring long-term reliability and lower installed costs.
What are the main product lines offered by Thomas and Betts?
Thomas and Betts offers a comprehensive range of product lines including electrical connectors, cable management systems, grounding and bonding solutions, and industrial automation components. Their products are designed for durability and reliability in demanding industrial environments, ensuring optimal performance and safety across various applications.
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Thomas and Betts offers comprehensive technical support, including access to field application engineers for onsite training and installation assistance. Their technical support staff is available to address inquiries related to product specifications and installation practices, ensuring optimal performance and safety of electrical systems. Additionally, they provide a variety of training programs to enhance the knowledge and skills of users in the field.
What industries and applications are Thomas and Betts products used for?
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Thomas and Betts products comply with critical international certifications including UL (Underwriters Laboratories), CSA (Canadian Standards Association), and CE (European Community). Our products are designed to meet rigorous industrial standards such as NEMA enclosure ratings and IEC 60529 IP ratings, ensuring safety and reliability across various industrial applications.
What are the main product lines offered by Ocal?
Ocal offers a comprehensive range of corrosion-resistant conduit systems, including PVC-coated conduit and fittings, conduit bodies, hazardous location fittings, and strut accessories. Their products are designed to provide superior corrosion protection, featuring a hot-dipped galvanizing process and UL listed Type 4X PVC-coated conduit bodies, ensuring durability in the most demanding environments.

