Protective Coatings |
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| Frame (steel) & Coil room Pickled sheet). |
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| Meter Terminal (brass) & Blade (brass). |
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| Housing, derivation, contact element, plug terminal (brass) & Contact blade (brass). |
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| Contacts (brass) & Wiring (copper). |
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| Plate (aluminum alloy) Plate ( aluminum) |
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| Relay armors (steel) & Relay arm (steel) |
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| Earthling blade (brass) & Flange (brass) |
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| Stainless steel nickel pre-plated casing & Screw (brass) |