Altech provides a full range of UL489, UL508, and UL1077-rated circuit protection for AC/DC systems. Engineered for motor loads, branch circuits, and control panels with compact, flexible solutions. 

UL489 - Branch Circuit Breakers 

• Full branch protection for AC/DC installations 
• Handles up to 63A at 240VAC or 125VDC 
• Dual-rated breakers available in 1-3 pole versions 
• UL489 compliant for system-wide safety 
• Suitable for panel builders and distribution boards 
  

UL508 - Manual Motor Controllers 

• Designed for motor loads and control applications 
• Rated up to 60A at 480Y/277VAC or 80VDC (2-pole) 
• Six available trip curves support diverse motor profiles 
• Withstands short circuits up to 10kA
• Offers robust selectivity and endurance

 
UL1077 - Supplementary Circuit Protection 

• Secondary protection beyond main branch circuits 
• Up to 63A, 480Y/277VAC, 1-3 pole options 
• Ideal for sensors, relays, PLCs, and auxiliary devices 
• UL1077 listed for enhanced circuit-level defense 

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