Bussmann TB345 Series Barrier ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$49.84
Bussmann TB345 Series Barrier Terminal Block Connector, Six-Pole, 600V/45A

Bussmann TB345 Series Barrier Terminal Block Connector, Six-Pole, 600V/45A

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Model: TB345-06B

In Stock (leaves warehouse same day if ordered before 3pm ET)

$49.84
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Bussmann TB345 Series Barrier Terminal Block Connector, Six-Pole, 600V/45A

The Bussmann TB345 Series Barrier Terminal Block Connector is a panel-mount terminal block engineered for six-pole electrical connections in industrial and commercial control panels. Built with a molded thermoplastic base, tin-plated brass terminals, and nickel-plated brass Philslot screws, this barrier-style block carries a 600V, 45A rating with a dielectric breakdown voltage of 7500V for reliable electrical isolation between adjacent poles. The TB345 Series is available across five terminal styles, B, BL, L, ST, and STL, so panel builders and electricians can match the exact terminal configuration their installation requires without switching to a different terminal block family.

Key Features

  • Six-Pole Configuration: Barrier-style terminal block provides six isolated poles for organized, code-compliant panel wiring.
  • Electrical Rating: Rated 600V and 45A, with a 7500V dielectric breakdown voltage for high-integrity isolation between adjacent poles.
  • Durable Construction: Molded thermoplastic base delivers strong electrical insulation and resistance to cracking in panel environments.
  • Terminal Hardware: Tin-plated brass terminals paired with nickel-plated brass Philslot screws for corrosion-resistant, low-resistance connections.
  • Barrier Design: Molded barriers between poles help prevent accidental arcing and short circuits during panel wiring and servicing.
  • Panel-Mount Design: Configured for direct mounting inside enclosures, control panels, and junction boxes.
  • Style Options: Offered in B, BL, L, ST, and STL terminal styles within the TB345 Series family to fit varied panel layouts and mounting needs.
  • Finish: Black molded housing for consistent panel appearance.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Industrial Control Panels
  • Electrical Enclosures and Junction Boxes
  • Machine Wiring and Motor Control Circuits
  • Power Distribution and Terminal Wiring Systems
  • OEM Panel Assembly and Panel-Builder Installations
  • Equipment Retrofit and Panel Rewiring Projects

Why Bussmann?

Bussmann is a trusted name in circuit protection and electrical connection components, and the TB345 Series reflects that standard with a molded thermoplastic base, corrosion-resistant tin-plated brass terminals, and a 600V/45A rating built for demanding panel environments. The 7500V dielectric breakdown rating and barrier-style pole isolation give panel builders added confidence when wiring dense, six-pole terminal blocks. Choosing the Bussmann TB345 Series means dependable, code-ready terminal block connections for professional electrical installations across industrial and commercial panels.

Manufacturer Resources

Product Specs

Department:
Electrical
Product Type:
Terminal Block
Product Material:
Thermoplastic
Product Color:
Black
Configuration:
Six-Pole
Connection Type:
Barrier
Voltage Rating:
600V
Amperage Rating:
45A
Series:
TB345
Product Group:
0
Product Subgroup:
0

Bussmann TB345-06B – Frequently Asked Questions

1) What voltage and amperage is the Bussmann TB345 six-pole terminal block rated for?
The TB345 Series barrier terminal block carries a 600V, 45A rating, with a 7500V dielectric breakdown voltage between adjacent poles. That covers typical industrial control panel and motor control wiring where circuit voltage stays at or below 600V and per-pole current stays under 45A. If your circuit draws more than 45A on any single pole, this block is the wrong part.
2) What do the B, BL, L, ST and STL style codes on the Bussmann TB345 mean when ordering?
Style is the terminal configuration, and it is the choice you make on the order form. The TB345 Series six-pole block comes in five terminal styles: B, BL, L, ST and STL. The part numbers run TB345-06B, TB345-06BL1, TB345-06STL1, TB345-15ST and TB345-16L3. Pick the style that matches the lug, spade or wire termination your panel layout uses so you are not mixing terminal block families in one enclosure.
3) Is a barrier terminal block like the TB345 the right choice, or should I use DIN rail blocks?
Barrier blocks and DIN rail blocks solve different problems. The TB345 is a barrier style block that mounts directly to the panel, enclosure wall or junction box surface, with molded barriers walling off each pole. That suits a fixed six-circuit landing point where you want ring or spade terminals under a screw and clear separation between poles. DIN rail blocks are the better answer when you expect the pole count to change, need to add or remove circuits over the life of the panel, or are standardizing on rail-mounted components. For a six-circuit terminal landing that is not going to change, the barrier block is simpler and needs no rail.
4) I need to land more than six circuits in a control panel. Can I use the TB345?
Each TB345 block covered here gives you six isolated poles, so a single block handles six circuits. For more, gang multiple blocks side by side in the enclosure, keeping the same style code so your terminations stay consistent across the panel. Do not plan on a single six-pole block carrying extra circuits by doubling wires under one screw.
5) What are the terminals and screws on the Bussmann TB345 made of?
Terminals are tin-plated brass and the screws are nickel-plated brass Philslot, which take either a flat blade or a Phillips driver. Both platings are there for corrosion resistance and low contact resistance. The body is molded thermoplastic in black, which is what provides the insulation and the barrier walls between poles.
6) Why do barrier walls matter between poles on a terminal block?
The molded barriers on the TB345 sit between each of the six poles so a stray strand, a loose ring terminal or a dropped screwdriver during servicing is far less likely to bridge two adjacent circuits. That physical separation is backed by a 7500V dielectric breakdown rating between poles. In a dense six-circuit landing that is the practical difference between a barrier block and an open strip.
7) Can the Bussmann TB345 be mounted inside a junction box or does it need a panel?
It is built for direct mounting inside enclosures, control panels and junction boxes. The thermoplastic base fastens flat to the mounting surface, so any of those three works as long as there is clearance for the wire terminations and the box is rated for the 600V circuit you are landing.
How fast can I get the Bussmann TB345-06B delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Bussmann TB345-06B come with a warranty?
Absolutely. The Bussmann TB345-06B is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Bussmann TB345-06B?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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