Special Switch

159-157-RA1 Relay, Reed. Mercury Hg-Wetted, Form C.

The mercury-wetted contact relay represents one of the more sophisticated types of relays made today. The early pioneer work in mercury-wetted contact switching dates back to the 1950’s, as telephone laboratory scientists sought out the “perfect contact”.

Reed relays use an external electromagnet to control the reed switch. The contacts are of magnetic material and the electromagnet acts directly on them without requiring an armature to move them. Sealed in a glass tube, the contacts are protected from corrosion. Mercury-wetted relays are fast in operation and have relatively good load carrying capacity and long life. The mercury films are reestablished at each contact closure and contact erosion is eliminated. The mercury films are stretchable, there is no contact bounce and because it is a mercury contact, the contact resistance is very low and idea for low level switching applications.

A mercury-wetted reed relay is a form of reed relay that employs a mercury switch, in which the contacts are wetted with mercury. Mercury reduces the contact resistance and mitigates the associated voltage drop. For high-speed applications, the mercury eliminates contact bounce, and provides virtually instantaneous circuit closure. Mercury wetted relays are position-sensitive and must be mounted according to the manufacturer's specifications. Because of the toxicity and expense of liquid mercury, these relays have increasingly fallen into disuse.

The high speed of switching action of the mercury-wetted relay is a notable advantage. The mercury globules on each contact coalesce, and the current rise time through the contacts is generally considered to be a few picoseconds. However, in a practical circuit it may be limited by the inductance of the contacts and wiring. It was quite common, before restrictions on the use of mercury, to use a mercury-wetted relay in the laboratory as a convenient means of generating fast rise time pulses, however although the rise time may be picoseconds, the exact timing of the event is, like all other types of relay, subject to considerable jitter, possibly milliseconds, due to mechanical imperfections. The only major weakness of a mercury wetted contact relay is the necessity to mount the relay within 30° of a vertical position, due to its position sensitivity.

Type: Form C

Contacts: SPDT.

Switched Load Rating: 2 Amp, 500 Volts Max, 100 VA Maximum

Carry Load Rating: 5 Amp

Contact Resistance: 14 Milliohms Typical, 20 Milliohms Max.

Packaging: Under High Pressure in Glass Capsules.

Approximate Dimensions 5.8mm D x 38mm Long. (0.225" X 1.5")

Life Expectancy: 1 billion operations minimum at rated load.

Note: Mercury Hg-Wetted.

Danger - High Pressure Glass Capsule- Handle with Care - User assumes responsibility and competency to handle this item.

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UNIMAX - A365A-Y - WD21X10261 - A364090 - AP3994765 Push Button Switch, Interlock.

Heavy Duty Switch, All Purpose Micro Push Button.

Contacts: SPST Normally Open.

Contact Ratings: 125/250VAC 15Amp. 3/4 HP, 125VAC, 1 1/2 HP 250VAC:

1.8" x 0.6" x 0.6" less Quick Connect terminals and push button - 1/4" Quick Connect Terminal at each end.

Mech: Panel, 2 holes at 1" centers.

Button Centered on Mounting Holes.

Panel hole: 1.817" long x 0.625" wide x 0.652" high.

Bulk Packaged

Color: Brown or Black.

Alternate Part Numbers WD21X557 as used in numerous appliances as interlock door switch. Commonly used on GE, Kenmore, Hotpoint, RCA and other appliances such as dishwashers and dryers as a door interlock switch.

Replaces/Alternates/Substitutions: AP3994765, 1263984, AH1481922, EA1481922, PS1481922, WD21X0557, WD21X557, and B00MNMS81Q.

Save Big $$ and repair those appliances yourself.

 

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Matsushita - S-3 TV-3 ESB-702T-671 -Switch, pushbutton, latching.

Contacts: DPST.

Ratings: 3A 250VAC.

Actuator: push-on, push-off.

Connection: solder terminals.

Mech: panel mount 2 threaded holes 0.80" spacing.

Note: Snap switch.

Use knob #4509, 8-431

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Electronic Switch -12V +5V Code Ident No. 29971each with serial number New bulk. ALT NO 7-136 Learn More

LICON – 16-114 w/ Actuator 76-1290 - Roller Switch, Limit & Manual Reset, DPST, 10A, 125/250VAC. ITW Licon Series 16 Snap Action Switch utilizes the Butterfly action for high integrity switching in a compact size. The series 16 Snap Action switch utilizes the Butterfly™ action for high integrity switching in a compact size. Using the Form Z switch circuitry, this switch can be used to control two circuits. Sub-Miniature 10A Double-Break Snap Action switch with Manual Reset. Switch mechanism utilizing a single spring element to provide lost motion. Status: Discontinued Contacts: DPST-DB. Contact Material: Silver Thermoplastic Case and Cover. Contact Ratings: 10A AC/DC, 125/250VAC. Actuator: 76-1290 Two Positions, Switch Roller Lever Maintained. Connections: Four End Solder Terminals. Mechanical: Riveted on Small Plate. Environment: IP40 Meets MIL-PRF-8805/7 Operating Design Life: Electrical – 100,000 Cycles, Mechanical 10,000,000 Cycles Body: 0.25" Width x 1.16" Length x <1.0"H. Temperature: -54C to 125 C (-65F to 275F) Note: Has an unusual mechanical reset once roller/lever is pushed and snaps. UL Recognized and CSA Certified. Applications: Industrial, Military, Aerospace Used / Removed from Equipment. Learn More

JBT - MR1-123 - JBT Switch, Paddle Miniature, Electroswitch B123J2ZQ2.

Status: Discontinued

Contacts: SPDT.

Switch Circuit: On - None - On

Number of Positions: 2 Position

Contact Ratings: 5A 125VAC.

Voltage Rating (DC): 28 V

Contact Material: Silver

Actuator: Paddle. (White)

Connection: Solder PC pins.

Dimensions: Width: 0.47 in, Height: 1.34 in, Length: 0.75 in

Mech: Panel Mount, two holes 0.93" spacing plus two 0.25" spacers, screws & nuts.

Genuine  JBT - New Old Stock

Note: Formerly Eaton (JBT) Now Electroswitch B123J2ZQ2

Alternate: B123J2ZQ2-ND, Allied 70152395

Made in USA

 

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Mopar - Chrysler Dodge Plymouth  -  Heater  - Blower Motor Switch, Rocker, Automotive.

Actuator: 4 Position (Off is Open, LO=C TO L, MED= C TO M, HI=C TO M + HI).

Connection: (4 Terminal) Male Quick Connect terminals.

Body: Overall 1.316" long x 1.448" wide x 1" behind panel.

Actuator extends to 1.571" above assembly.

Note: Blower Motor Switch.

Mounted on a plate 1.316" long x 1.448" wide.

Vintage - Genuine Chrsyler Dodge Plymouth - Factory New Old Stock

Similar to 3502681 (1970's Vintage)

Alternate Appplications - Hobbyist Motor/Fan Control

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C & K Components - 3U0210L02 - Switch, BCD.

Pushbutton 0-9,

1 Amp,

Two Tiny Pushbuttons: Up or Down

Snap-in front mount.

Gold-plated contacts & PC board.

More info: http://www.ck-components.com/3/thumbwheel,10595,en.html

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TR-11236 Transformer.

Input X1 & X2 = 120 VAC

Output Hi & H2 = 36VAC 250mA.

Mount: Chassis, Open Frame, 4 wire.

Marked: 64977-93-S

Dimensions: 2-1/3" wide x 2" deep x 2" high with 2-7/8" mount centers.

NSN 5950-00-804-4379

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TUNG-SOL - 195S4S - Flasher, Sterling Fire Alarm Co. Thermal Flasher.

Used commercially as well as on numerous Antique Vehicles

1930 1940 1950 Ford Pontica Buick Chevrolet Tung Sol 12 Volt Flasher

Flasher 12VDC, 2 wire. Old Style bi-metal flasher. Rated for 50 candlepower bulb. 

NSN 5945-00-873-9126

Alternate: 5945-350-0065,  03148-PP-60-A3-AS, IC-6-5/60

MIL-B-121A Packaged.

Made in USA

 

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0-9 THUMBWHEEL SWITCH 9-pin BCD BM1-2-4-8/N side-stackable 1.8"hi x 0.5" wide 28"-behind panel including 9 long pins NEW IND PKG'D Learn More

ALPS - 160595-3 Switch, Rotary Slide Switch.

Status: Discontinued

Input Selector Switch

Contacts: 4-Pole 5-Position. 4 sets of 7 contacts-arrangement unknown.

Actuator: 1/4" Flatted Shaft 5/8" Long.

Connection: PC Terminals (28 Pins).

Body: 0.1" x 0.2" spacing 0.20"long - 2.7" long behind panel, x 0.6" x 0.75" with 28 terminals.

Panel Hole: Threaded Bushing.

Genuine Vintage ALPS - New Old Stock - Rare

Made in Japan

 

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Universal - Adjustable Deluxe Pin Switch, Normally Closed (NC). 

Code Alarm Pin Switch

• Applicable models for cars, trucks, RVs, off-road vehicles adapted models for motor vehicle hood
• Hood trunk door pin uses: Car hood intrusion switch / auto switch trunk notice
• Door plunger switch alarm auto hood pin with adjustbale screw length,easy operation
• Durable material: Made of environmental protection iron, plastic materials,can use long time with great touch
• Plastic top design,designed for car domelight/ hood intrusion switch/ auto switch trunk notice

Dimensions: Length 70MM or 2.75", Screw Length: 35MM or 1.37"

 1/4-20 Threaded Body.

Rating: 20A, 12VDC

Connection: 0.25" Quick Connect on the bottom.

The spring slides smoothly and has a long service life.

Operation: When depressed, it breaks open the circuit.

Comes with 2 nuts and lock nut for adjusting the depth.

Actuator: Nylon.

Switch Housing Material: Anodized Steel

Applications: Alarm Systems, Home Security, Dome Light, Door Jam, Hood Intrusion, Trunk, Bonnet Notice.

Alternates: HDPS5, AMZegal49042, A0480-2, ASCZOV

Package of 4.

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Switch. Rotary contact block/ housing only. No actuator. NIB, with manufactures installation sheet. Learn More

Switch, toggle. Contact Ratings: Input: 120VAC. Output: 1/3HP 500 Watt max. Actuator: On-Time. Elect config: wire terminals. Mech: Wall box. Note: Electrical wall box. Light/Fan switch. 4 Wire. Listed: UL 51E5. Complete with wiring diagram. Learn More

Vintage Leviton - 1210 SP - Switch, Toggle. AC/DC Surface Mount, SPST, 10A/125VAC, 5A/250VAC. 

Contacts: SPST.

Contact Ratings: 10Amp 125VAC.

Actuator: On-Off.

Mech: Surface Mount, with two screw holes in base with 1.418" (36.0mm) centers.

Body: 1.952" (49.5mm) D x 1.465" (37.2mm) high plus actuator.

Color: Brown.

Genuine Vintage Levitron - New Old Stock

Made in the USA.

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Honeywell/Microswitch - AML51F20W Switch Actuator Lens Cover.

Industrial Panel Mount Indicator

Marked with legend STEP.

Rectangular.

 

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EAO SWITCH - 704.900.3 Contact Block, Switching Element.

Configuration: DPST, 1Pole

Switching Voltage: 500VAC

Switching Current:10 Amp

Contacts: 2 Normally Closed, Silver

Terminal: Screw Terminal

Switch System: snap-Action Switching

SVHC:No SVHC (18-Jun-2010).

Terminal type:screw.

Rohs compliant.

More info: http://products.eao.com/index.php?IdTreeGroup=279&IdProduct=54345

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Chicago Switch - 3-334 - EIA50 - 034-550-001 - Switch, Pushbutton.

Contacts: NO. - Heavily Gold Plated 

Hermetically Sealed Can

Actuator: SPST NO (Form 1) Momentary.

Can Material: Nickel-Silver

Actuator: Thermoplastic (PBTP)

Rating: 100mA @125 VAC

Connection: TO-39 To-39 push button switchype, Metal Can 2 pin.

Lead Length: 0.149" Llong with spacing @ 0.20".

Mech: PCB Mount.

Life: 1,000,000 Actuations

Panel Hole: 0.3674" Diameter x 0.260" High. (Top Can Diameter is 0.325")

Note: Black Button Actuator is 0.171" D.

Vintage Chicago Switch - New Old Stock -  Difficult to Find

Applications: Reset Switch / Detect Switch

Note: ITW Switched (Formerly Licon / Chicago Switch) Formerly Chicago Switch

Alternate: ITW Series 034 P/N 034-550-001

RoHS Compliant

Made in USA

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CEMA 1NO Contact Block , Probably used for GE key switches. Learn More

EAO SWITCH - 61-1300.021X

60V LAMP BEZEL PUSH Button

Switch Body only

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Unidirectional switch, silicon. Package: TO-92 gold leads. New. Learn More

M H Rhodes - 42003 Switch, toggle.

Contact Ratings: Input: 120VAC.

Output: 1/3HP 500 Watt max.

Actuator: On-Off-Time.

Elect config: wire terminals.

Mech: Wall box.

Note: Electrical wall box with time switch, 1-60 minutes.

Light/Fan switch. 4 Wire.

Listed: UL 51E5.

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