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| | | F;T*N | | |
| | | High Capacity Toggle Switch — 7818K1 | | |
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| | | | | | | | | | arcing, and of welding the | Contact Material: | | | | | 10% silver cadmium | | | | addressed this problem with | oxide composite. | | | | | | | | By combining innovative | Terminal Type: | | | | design and quality materials, | Screw Terminals — Brass | | | | | (Cat. No. 11-6074-4) supplied. | | | | carry the specified maximum | Furnished unassembled. | | | | inrush current for | Mounting Means: | | | | 10 milliseconds for a minimum | | | | of 20,000 On/Off cycles. | Molded flush mounting | | | | | bracket, high impact | | | | SPECIFICATIONS | polycarbonate, 84.12mm | | | | Ratings: | (3.312"), center-to-center | | | | spacing and 60.33mm | | | | 40A, 600V ac. | (2.375") spacing for | | | | 5 Hp, 250V ac. | self-tapping screws. | | | | Circuits: | Lever: | | | | 2PST — maintained. | Nylon. | | | | Contact Mechanism: | Base: | | | | Quick-make/Quick break snap | Molded thermoset material. | | | | acting butt contact. | Dielectric Withstand: | | | | Make: 200A peak inrush at | 2200V RMS minimum. | | | | 125V ac for 10 ms for 20,000 | | | | | cycles minimum. | Approvals: | | | | Break: 20A at 125V ac for | UL to Standard 508, | | | | 20,000 cycles minimum. | File E147754. | | | | | | | | | | | | | | |
| | | DESCRIPTION The heavy duty, high capacity switch (Cat. No. 7818K1) is ideal for exceptionally high power applications, heavy duty motor loads and for use in welding equipment or similar industrial applications. HIGH CAPACITY OVERVIEW Capacitive loads will result in a current inrush far exceeding normal operating current. In fact, the typical capacitive load inrush current, shown in Figure 2, is potentially more damaging to a switch than a typical inductive load inrush. The major difference is that the capacitive load can reach maximum inrush sooner. Generally, peak inductive load current inrush (figure 1) occurs after any switch contact bounce has subsided. In a capacitive load, however, switch contact bounce could occur at the same time as maximum current inrush, increasing the possibility of | | |
| | | 8337K2 I Outlet Box Mounting | | |
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| | | ' 7818K1 High Capacity | | |
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| | | DIMENSIONS APPROXIMATE IN MM (INCHES) | | |
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| | | 96.82 (3.812) 83.34 Mtg. (3.281) | | |
| | | 35.71 Max. (1.406) | | |
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| | | 19.84 (.781) | | |
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| | | (1.25 | | |
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| | | 57.15 Max. (2.250) | | |
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| | | | | | | | | | | | | | CAPACITIVE (FIGURE 2) | | | | | | | | | | | AH Test Criteria | | | | | | | Typical | | | | | | | Initial | | | | | | | Peak | | | | | | | \\ | CUIIeit | | | | | | | | | | | | | | | \\'- | | | | | | | | \\\ | | | | | | | | | | | | | | Pi i rront CU Ilei 11 | | | | | | | | | | | | | | | | Time | | | | | | | | | | | | | |
| | | INDUCTIVE (FIGURE 1) | | |
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| | | Time | | |
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| | | |2~19| | | |
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