TJB Incorporated has made industrial cable couplers in North Ridgeville, Ohio, since Ted Brenner founded the company in 1970 after designing the first 7.5KV, 500-amp cable coupler in 1957. Its couplers are used most heavily in mining, where TJB’s no-thread connection and PTFE insulation were developed to reduce maintenance and the downtime caused by harsh operating conditions. The company also builds specialized coupler equipment and typically limits standard order lead times to three days, with same-day shipment often available for emergencies.
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