Motor Protection Circuit Breakers - Dhruva Automation & Controls.

Recommendations

Info

Time / Current Characteristic Tripping time [s] Tripping time [s] Thermal release trip current: The adjustable inverse bimetal trip reliably protects motors against overloads. The curve shows the mean operating current at an ambient of 20 C starting from cold for KTA 3-25, KTA 3-100 and 25 C for KTA 3-160S, KTA 3-250S and KTA 3-400S. Careful testing and setting ensures effective motor protection even in the case of single-phasing. Circuit-breaker KTA 3-25 Circuit-breaker KTA 3-100 Multiple of the set current I eF Circuit-breaker KTA 3-160S Multiple of the set current I eF Tripping time [s] Tripping time [s] Tripping time [s] Circuit-breaker KTA 3-400S Multiple of the set current I eF Multiple of the set current I eF Circuit-breaker KTA 3-250S Multiple of the set current I eF Magnetic release trip current: The instantaneous magnetic trip has a fixed operating current setting for KTA 3-25 and KTA 3-100. This corresponds to 11 times (for KTA 3-25) and 14 times (for KTA 3-100) the highest setting of the thermal overload trip. The instantaneous magnetic trip for KTA 3-160S, KTA 3- 250S and KTA 3-400S are adjustable.
Accessories: Circuit Breaker KTA 3-25 Current limiter KTL 3-65-N u Improved switching capacity u No back-up fuse necessary u Reliable in function u Repulsion contacts close automatically u For single and group protection u When used compact bus-bars beside KTA 3-25 KTL 3-65-N serves as supply block Auxiliary switch blocks for flush mounting u No extra space needed 1 Normal contact designation 2 Higher contact designation L Early-make contact add on lefthand side 2-pole Use compact bus-bar with pitch 54 mm Release control switch blocks for flush mounting u Indicate tripping of the circuit breaker u No extra space needed Technical Data KT 3-25-PE, KT 3-25-PA, KT 3-25-PF u For locking the START button u For locks ring diameter f 8 mm KTA 3-25 KT 3-25-... PF-10 PF-01 Thermal rated current I th at 40 C ambient temperature 6 A at 60 C ambient temperature 4A Contact class according NEMA AC B 600 Standard Pilot Duty (UL / CSA-standards) DC R 300 Light Pilot Duty Back-up fuse gl, gL 16 A Undervoltage release / Shunt release KT 3-25-UA KT 3-25-AA add on righthand side Contact diagrams KTA 3-25 KT 3-25-... KTA 3-25 KT 3-25... UA-...V.. AA-... V.. Technical Data KT 3-25-UA...V.. KT 3-25-AA...V.. Operating voltage Pull-in 0.8...1.1 x U s 0.7... 1.1 x U s Drop-out 0.7...0.35 x U s – On-time 100% ED 100% ED Rated control voltage min.: 12 V 50 Hz/14 V 60 Hz 12 V 50 Hz/14 V 60 Hz max.: 600 V 50 Hz 600 V 50 Hz Coil rating KT 3-25-UA...V.. KT 3-25-AA...V.. Pull-in 8.5 VA, 6 W 8.5 VA, 6 W Hold 3 VA, 1.2 W 3 VA, 1.2 W Weight 104 g 100 g Locking device Contact diagrams KTA 3-25 KT 3-25-... KTA 3-25 KT 3-25-... Weight 11 g PE1-10 PE2-10 PE1-01 PE2-01 PE-L10 PA-20 PA-02 PA-11 Type designation KTL 3-65-N Technical Data Rated voltage 690 V Continuous current 65 A Weight 210 g Type designation KT 3-25-PE1-10 KT 3-25-PE2-10 KT 3-25-PE1-01 KT 3-25-PE2-01 KT 3-25-PE-L10 Type designation KT 3-25-PA-20 KT 3-25-PA-11 KT 3-25-PA-02 Type designation KT 3-25-PF-10 KT 3-25-PF-01 Rated current 230/240 V 400/415 V 500 V 690 V AC-15 2 A 1 A 0.8 A 0.5 A 24 V 48 V 110 V 230 V DC-13 2 A 0.6 A 0.2 A 0.1 A Weight KT 3-25-PE 12 g KT 3-25-PA 35 g KT 3-25-PF 13 g Type designation KT 3-25-UA-... 24 V 50/28 V 60 110 V 50/127 V 60 220...230 V 50/240...260 V 60 240 V 50/277 V 60 380...440 V 50/440..460 V 60 400 V 50/480 V 60 KT 3-25-AA-... 24 V 50/28 V 60 110 V 50/127 V 60 220...230 V 50/240...260 V 60 240 V 50/277 V 60 380...440 V 50/440...460 V 60 400 V 50/480 V 60 Type designation KT 3-25-DSC
Page 1 and 2: sprecher+ schuh Motor Protection ag
Page 3 and 4: Bringing about a revolution in circ
Page 5: Product information: Circuit Breake
Page 9 and 10: Accessories: Circuit Breakers KTA 3
Page 11 and 12: SHORT CIRCUIT CO-ORDINATION SELECTI

Motor Protection Circuit Breakers - Dhruva Automation & Controls.

Create successful ePaper yourself

Delete template?

Save as template?