Description Thermal-Link (ATCO)-Alloy Type is defined as a non-resettable protective device functioning one time only. It is widely used in electrical equipment. ATCO is mainly consist of fusible alloy, flux resin, case, sealant and lead wires. Normally, fusible alloy is jointed to the two lead wires. Under abnormal conditions, when the temp. reaches to the fusing temp. of ATCO, the fusible alloy melts and quickly retracts to the two lead wire ends with the aid of the flux resin and disconnects the circuit completely. SETsafe | SETfuse Thermal-Link (ATCO)-Alloy Type K series Rated Functioning Temp. from 76 °C to 221 °C, Rated Current: 2 A, 4 A, safety certification Includes UL, cUL, TUV, PSE, VDE, KC, CCC, and complies with RoHS and REACH. • High Accuracy of Functioning Temp. • RoHS & REACH Compliant Applications • Lamps • Switched-Mode Power Supplies • Home Electrical Appliances Customization • Other Temp. • The Length of Lead Wires • Taping Packing Available • Lead Wires can be Insulated • Tinned Copper Wires or CP Wires • Leads Forming Types Structure Diagrams Radial Marking Radial (Color for reference only) Fusible Alloy -Flux Resin -Sealant Epoxy Lead Wire Agency Mark +86-592-571-5838 www.SETfuse.comwww.SETsafe.com E-mail : [email protected] All Rights Reserved by Xiamen SET Electronics Co., Ltd. 2024-2026 V1.0

Note 1: "•"Means certificated, "0"Means non-certificated, RoHS & REACH Compliant . 2: " * "Customizable DC voltage. All Rights Reserved by Xiamen SET Electronics Co., Ltd. 2024-2026 V1.0

Agency Information Agency Symbol 1. Soldering should be carried out according to Table T-1. 2. The thermal element of ATCO is fusible alloy with low melting point, which is jointed with ATCO lead wires. Improper soldering operation (too high soldering temp. , too long soldering time, too short lead wire etc.) may transfer more heat to the thermal element and ATCO may open in advance. 3. When soldering conditions are more severe than those listed in Table T-1, a heat sink fixture should be used between soldering point and ATCO body. 4. When soldering, please do not pull / push or twist ATCO body...

Wave Soldering The wave soldering parameters as Table T-2, for reference only, when ATCO is for practice use, you need to do some validation experiments. For example, using X-RAY to see the fusible alloy of ATCO whether damage after wave soldering. TABLE T-2 Wave Soldering Parameters Setting Max. Wave Soldering Temp. Preheating Temp. Cooling Time Preheating Time Dwelling Time All Rights Reserved by Xiamen SET Electronics Co., Ltd. 2024-2026 V1.0 +86-592-571-5838 www.SETfuse.comwww.SETsafe.com E-mail : [email protected]

Thermal-Link (ATCO)-Alloy Type Product Temp.-Time Curve (Reference) The Temp.-Time Curve of Thermal-Link in different temp. oil bath. E-mail : [email protected]

Thermal-Link (ATCO)-Alloy Type Product Current-Time Curve (Reference) The Current-Time Curve shows functioning time at multi-times rated current at room temperature 25 ± 2 °C. E-mail : [email protected] All Rights Reserved by Xiamen SET Electronics Co., Ltd. 2024-2026 V1.0 6

Packaging Information Bulk All Rights Reserved by Xiamen SET Electronics Co., Ltd. 2024-2026 V1.0

Thermal-Link (ATCO)-Aiioy TypePart Numbering SystemATCO - K 2 - A N N A B - 001Other Options Packing B Bulk T Taping Leads Forming A Straight Lead B Single Lead Bending E Leads Bending and Kinking Color of Insulation Tube W White Y Yellow R Red Insulation Tube Material T Teflon Lead Wire Type A Tinned Copper Wire B Tinned Copper Plated Wire Rated Functioning Temp. 2 115 °C, See Specifications Series Series See Specifications Product Category ATCO Alloy Thermal-Link +86-592-571-5838 www.SETfuse.comwww.SETsafe.com E-mail : [email protected] All Rights Reserved by Xiamen SET Electronics Co., Ltd....

Glossary Item +86-592-571-5838 www.SETfuse.comwww.SETsafe.com E-mail : [email protected] All Rights Reserved by Xiamen SET Electronics Co., Ltd. 2024-2026 V1.0

Thermal-Link (ATCO)-Alloy Type ATTENTION Usage 1. When atmosphere pressure is from 80 kPa to 106 kPa, the related altitude shall be from 2000 meters to - 500 meters. 2. Operating voltage less than rated voltage of ATCO, operating current less than rated current of ATCO. 3. Do not touch the ATCO body or lead wires directly when power is on, to avoid burn or electric shock. Replace ATCO is a non-repairable product. For safety sake, it shall be replaced by an equivalent ATCO from the same manufacturer, and mounted in the same way. Storage Do not store the ATCO at the high temp., high humidity or...

Mechanical ConnectionRiveting 1. Choose small resistivity riveting material and be riveted. 2. A flexible lead or lead with low resistance should be used to rivet the ATCO. 3. Contact resistance should be minimal, large contact resistance will lead to higher temp., ATCO Functioning in advance. 1. Choose small resistivity crimping material and be crimped. 2. A flexible lead or lead with low resistance should be used to rivet the ATCO. 3. Contact resistance should be minimal, large contact resistance will lead to higher Temp., ATCO Functioning in advance. 1. If lead wire has to be bent, please...

Thermal-Link (ATCO)-Alloy Type Leads Forming Types The below leads forming is for reference, more leads forming can be customized. Radial A E-mail : [email protected] All Rights Reserved by Xiamen SET Electronics Co., Ltd. 2024-2026 V1.0 12

Thermal-Link (ATCO)-Alloy Type Feature & Model List Overview Rated Voltage Axial Shape Radial Shape Radial Shape (Screw Hole)

Thermal-Link (ATCO)-Alloy Type Feature & Model List Overview Radial Shape Axial Shape Axial Shape Axial (Flat Electrode) Shape Axial Shape

Thermal-Link (ATCO)-Alloy Type Feature & Model List Overview tor*l ProductStructure Axial Shape

Thermal-Link (ATCO)-Alloy Type Feature & Model List Overview Rated Voltage tor*l ProductStructure Radial Shape (Screw Hole) Radial Shape Axial Shape (Flat Electrode)