Price of a single-wire terminal block in a distribution box

A standard single-wire DIN rail terminal block typically costs between $0.18 and $4.50 per piece, depending on brand, type, and specifications.

Price Range and Factors

The cost of a single-wire terminal block varies widely based on brand, connection type, and current/voltage rating. Basic feed-through blocks from domestic or Asian manufacturers can start as low as $0.18 per piece, while premium European brands like Phoenix Contact or Weidmüller can reach $3–$5 per piece for standard 600V, 20–30A blocks . Screw-clamp terminals are generally cheaper, whereas push-in or spring-cage types that reduce wiring time are more expensive .

Bulk Pricing

For panel builders or large projects, bulk purchases can reduce the per-piece cost by 15% to 40%, depending on order volume . For example, sourcing thousands of Connectwell CTS2.5UN terminals could cost around $0.34 each, while Phoenix Contact UT 2.5 blocks may cost $2.10 each from the same distributor .

Specifications Affecting Price

• Voltage and current rating: Higher-rated blocks cost more.
• Connection type: Screw-clamp vs push-in or spring-cage.
• Wire gauge compatibility: Commonly 24–12 AWG for single-wire blocks.
• Brand and origin: European OEMs are typically 3–5× more expensive than Asian alternatives .
• Color coding and modularity: Some blocks offer multiple colors or modular stacking, which can slightly increase cost .

Where to Buy

Single-wire terminal blocks are available from distributors like Mouser, Digi-Key, RS Components, and regional suppliers . They can also be purchased directly from manufacturers such as Phoenix Contact, Schneider Electric, or Weidmüller . In summary, for a single-wire terminal block in a distribution box, expect to pay $0.18–$4.50 per piece, with bulk orders and simpler screw-clamp types at the lower end, and premium push-in or spring-cage blocks at the higher end.