Keys/Knife Switch |
(ZES 150)
Thick brass block of 9mm fitted on heavy Bakelite base provided with all brass terminals and
brass screws. |
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(ZES 151)
Thick brass block of 9mm fitted on heavy Bakelite base provided with all brass terminals and
brass screws. |
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(ZES 152)
On bakelite base with brass terminals. |
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(ZES 153)
On bakelite base with brass terminals. |
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(ZES 154)
| Single pole, double throw, mounted on bakelite base. |
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(ZES 155)
| Double pole, double throw, mounted on bakelite base |
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(ZES 156)
Rotary brush, type switch with phosphor-bronze contacts. Screw terminals. Maximum current 10A. Mounted on an insulating base. |
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(ZES 157)
Used in experiments on hystersis. The thick brass sheet contact arms and the joining strips are fitted on Bakelite base. Operation of the contact arm is done with Bakelite handle. The terminals are provided on the sides of the square base. Max current 5 Amp but supplied without mercury. |
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(ZES 158)
Used for charging & discharging of a capacitor. Nikel plated brass strips & pillars are used. Three terminals for connections fitted on a thick Bakelite plate.
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| Contact Resistance 2 milli ohm approx. |
Max Current 5 Amps. |
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(ZES 159)
Fitted on thick Bakelite bases with all brass parts. |
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(ZES 160)
| Brass strip with insulated knob and terminals mounted on a Bakelite plate of high insulation. |
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| Contact Resistance 2 milli ohm approx. |
Maximum Current 5 Amps. |
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(ZES 161)
Two brass strip & four terminals mounted on a Bakelite plate of high insulation. |
| Contact Resistance 2 Milli ohm Approx. |
Maximum Current 5 Amps. |
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(ZES 162)
Heavy model on Bakelite base. |
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(ZES 163)
Fitted on bakelite plates with brass C.P.Cup. |
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