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Test Equipment Grade Switches

Multi-Tech Industries also manufacturers a line of quality instrument-grade electromechanical switches for commercial, industrial, military, institutional and OEM applications. Rotary switches (open frame, enclosed frame), thumbwheel, keyreader and other types are available to be integrated into your process controls or test instrumentation. Standard and custom switch designs can be modified to meet specific customer requirements.

Give us a call today at 1-732-431-0550 for more information.

MODEL 820 SWITCHES

Specifications
Contact Resistance: Less than 1 mΩ Insulation Resistance: more than 106 MΩ @ 400 C. and 75% R.H. (terminal to terminal and to shaft).	Positions: up to 12 positions, shorting. (300 indexing). Poles: 1 or 2 poles/deck. Decks: 1 to 6 decks/switch.
Current Carrying Capacity: 15A max. switching: 5A @ 28VDC, 1A @ 125VAC Capacitance: Less than 1 pF, contacts to shaft.	Switch body diameter: 1.62” External shaft: ¼” stainless steel Detent rollers: stainless steel Internal shaft: glass-filled polycarbonate
Voltage Breakdown: 2000V RMS, terminal to terminal and to shaft	Indexing: 30° or 60° available, nylon detent for smooth action
Thermal EMF: Less than 1 μV Extremely low. Silver contacts to silver alloy brushes	Continuous rotation, fixed or adjustable stops to limit rotation to number of positions desired.
Construction: decks: Diallyl Phthalate (DAP), totally enclosed – dust tight Mounting Bushing: nickel plated brass 3/8-32 UNF Front Housing and End Plate: Zytel 101 Nylon	Contacts: Stationary-Fine silver-clad copper Wiper: Silver alloy, self-cleaning leaf type Terminals: Solder type with .067”Ų hole
Losses: Low electrical losses at frequencies up to several MHz.	Long Life – in excess of 106 cycles

Model 820 Rotary Switch

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MODEL 3A SWITCHES

Specifications
Contact Resistance: 3 - 6 mΩ Insulation Resistance: 104 MΩ, min @ 500VAC	Decks: 1 to 8 decks/switch
Contact Rating: carrying capacity: 15A @ 28VDC @ 20°C. switching	Poles: 1 or 2 poles/deck.
Voltage Breakdown: 1,000VRMS; 2,000 VDC @ sea level	Positions: up to 12/deck (shorting and non-shorting).
Temp. Range: 65° C. to 95° C.	Continuous rotation, fixed or adjustable stops to limit rotation to number of positions desired.
Torque: 1.5 – 2.5 in/lbs (up to 6 decks)	Contacts: Shorting (30° throw) and Non-Shorting (60° throw).
Life – in excess of 50,000 cycles (no load switching).	Stationary Contacts: Silver plated brass or silver alloy Rotary Contacts (wipers): silver alloy
Construction: decks: Diallyl Phthalate (DAP), totally enclosed – dust tight Front Housing & End Plate: Zytel 101 Nylon	Switch body diameter: 1.00” Shaft: ¼” stainless steel Mounting Bushing: Nickel plated brass 5/15-32 or 3/8-32 UNF

Model 3A Rotary Switch

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MODEL 2A SWITCHES

Specifications
Contact Resistance: 4 -6 mΩ Insulation Resistance: 104 MΩ, min	Decks: Standard: 1 to 6/switch Special: 7 to 24/switch
Contact Rating: carrying capacity: 5A @ 115VAC max Voltage Breakdown: 1,000VRMS	Poles: 1 to 4 poles/deck.
Construction: open frame type Shaft: Stainless Steel Mounting Bushing: Nickel plated brass	Positions: up to 24 positions @150 indexing ,12 positions @ 30° indexing
Stationary Contacts: Silver plated brass or silver alloy Rotary Contacts (wipers): phosphor bronze or silver alloy	Continuous rotation, fixed or adjustable stops to limit rotation to number of positions desired.
Life – in excess of 50,000 cycles (no load switching).	Contacts: Shorting (15° indexing) and Non-Shorting (30° indexing).

Model 2A Rotary Switch

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MODEL B6 Thumbwheel SWITCHES

Specifications
Contact Resistance: 15-60 mΩ, depending on circuit. Insulation Resistance: 500 MΩ, min Voltage Breakdown: 1,000VAC	Construction: Housing, end plates and rotor: Black Cycolac Detent Spring: Phosphor Bronze Wiper: Beryllium Copper Size: ½” wide switch modules Mounting: Front or back of panel
Contact Rating: Switching .15A @ 115VAC Res. Load Carrying: 1A @ 115VAC	Positions: 1 to 10 positions Numbering: ¼” white numerals on black rotors.
Life – in excess of 1,000,000 detent operations.	Continuous, bi-directional operation. Adjustable stops to limit rotation to number of positions desired.

Model B6 Thumbwheel Switch

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MODEL 600 OPEN FRAME SWITCHES

Specifications
Contact Resistance: 4 - 6 mΩ Insulation Resistance: 104 MΩ, min	Type: up to 12 position, 1 or 2 poles/deck, up to 8 decks, 30° & 60° throw.
Current Carrying Capacity: 15A @ 28VDC, 120VAC	Insulation: G-10 Glass Epoxy/ MIL-P-18177 type GEE.
Voltage Breakdown: 1,000V; special to 1500V	Life – in excess of 50,000 cycles (no load switching).
Contacts: Silver alloy, shorting and non-shorting Maximum contacts/deck: 32	Continuous rotation, fixed or adjustable stops to limit rotation to number of positions desired.
Size: 1.750” square front panel Mounting: 2 holes, 1.375” between centers, 632 UNC thread	Shaft: Stainless Steel

Model 600 Rotary Switch

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MODEL 700 OPEN FRAME SWITCHES

Specifications
Contact Resistance: Less than 3 - 5 mΩ Insulation Resistance: 10,000 MΩ, min @ 500VAC	Type: up to 12 position, 1 or 2 poles/deck, up to 8 decks, 30° & 60° throw.
Current Capacity: 15A @ 28VDC @ 20°C.	Contacts: Silver plated brass or silver alloy: Shorting and Non-Shorting
Voltage Breakdown: 1,000V RMS; 2,000 VDC @ sea level	Insulation: G-10 Glass Epoxy/ MIL-P-18177 type GEE.
Thermal EMF: Extremely low. Silver contacts to silver alloy brushes	Both continuous rotation and external adjustable stops to limit rotation to number of positions desired.
Mounting: 2 holes, 1.500” between centers, 8-32 UNC thread	Size: 2.750” square front panel
Life – in excess of 50,000 cycles (no load switching).	Shaft: Stainless Steel

Model 700 Rotary Switch

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MODEL 800 OPEN FRAME SWITCHES

Specifications
Contact Resistance: 4 - 6 mΩ Insulation Resistance: 104 MΩ, minimum	Type: up to 12 position, 1 or 2 poles/deck, up to 8 decks, 30° & 60° throw.
Current Carrying Capacity: 15A Breaking Capacity: to 5A depending on circuit	Contacts: Silver alloy, shorting and non-shorting
Voltage Breakdown: 1,500V; special to 2500V	Insulation: G-10 Glass Epoxy/ MIL-P-18177 type GEE.
Thermal EMF: Extremely low. Silver contacts to silver alloy brushes	Continuous rotation, fixed or adjustable stops to limit rotation to number of positions desired.
Mounting: 2 holes, 1.500” between centers, 8-32 UNC thread	Size: 2.187” square front panel
Life – in excess of 50,000 cycles (no load switching).	Shaft: Stainless Steel

Model 800 Rotary Switch

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MODEL 900 OPEN FRAME SWITCHES

Specifications
Contact Resistance: Less than 3 - 5 mΩ Insulation Resistance: 10,000 MΩ, min @ 500VAC	Type: up to 12 position, 1 or 2 poles/deck, up to 8 decks, 30° & 60° throw.
Current Carrying Capacity: 15A Breaking Capacity: to 5A depending on circuit	Maximum contacts per deck: 72. Continuous rotation, fixed and external adjustable stops available.
Thermal EMF: Extremely low. Silver contacts to silver alloy brushes	Insulation: G-10 Glass Epoxy/ MIL-P-18177 type GEE.
Mounting: 2 holes, 1.500” between centers, 8-32 UNC thread	Size: 2.875” front panel
Life – in excess of 50,000 cycles (no load switching).	Contacts: Silver alloy, shorting and non-shorting

Model 900 High Voltage
Rotary Switch

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MODEL 904, 906 and 908 OPEN FRAME SWITCHES

Specifications
Contact Resistance: 4 - 6 mΩ Insulation Resistance: 104 MΩ, minimum	Type: up to 12 position, 1 or 2 poles/deck, up to 8 decks, 30° & 60° indexing.
Current Carrying Capacity: 25A (24 contacts). Breaking Capacity: to 5A depending on circuit.	Life – in excess of 50,000 cycles (no load switching).
Voltage Breakdown: 1,500V, special to 15,000V	Max contacts per deck (904): 84. Max contacts per deck (906): 120. Max contacts per deck (908): 150.
Phosphor Bronze or silver alloy brushes available. Insulation: G-10 Glass Epoxy/ MIL-P-18177 type GEE.	Continuous rotation, fixed and external adjustable stops available.
Mounting: (904, 906, 908) 4 holes, 3.000” between centers, 8-32 UNC thread	Size: 4.000” square front panel (904) 6.000” square front panel (906) 8.000” square front panel (908)
Contacts: Silver alloy, shorting and non-shorting	Shaft: Stainless Steel

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Custom Designed Model 906 Rotary Switch

KEYREADER SWITCHES

Specifications
Contact Resistance: less than 60 mΩ Insulation Resistance: 100 MΩ	Key Material: Injection molded nylon. Key Reader Assembly Body: Glass filled nylon
Capacitance: less than 100 pF- max., pin to pin Current: 5mA min. 1A DC resistive load.	Contacts: Self wiping, bifurcated, gold plated beryllium copper. Gold electroplated printed circuit tabs.
Contact Form: NC, 28 outputs plus SPDT “read ready” switch. “ 10A 1/3HP 125/250VAC 1/2A 125VDC, 1/4A 250VDC 4A 125VAC, lamp load	Mounting: 2 holes on vertical centerline per customer’s spec. Life – in excess of 1 X 107 operations

Model Keyreader Switch

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RF Power Switches

Test & Instrumentation Switches