Beckwith Electronics


824 Horan Drive, Fenton, Mo 63026
(636) 343-6463
(636) 343-7026 fax

EAO Switch

Series 71 Flush Mounting PCB Switching System-Oil & Watertight Switches and Indicators Features: Easy printed circuit board mounting, contact block mounts directly on PCB, no connector needed Locking pins attach actuator to contact block 250 VAC/3 A to 5 VAC/10mA, 24 VDC/3 A Minimum back of panel depth: 1.67" Flush rectangular, square, and round bezels Meet IP65 and NEMA 4 and 13 specifications

The new Series 71 switch line offers easy assembly, fast wiring, and a limited number of modular components that provide a broad range of products. The compact, flush mounting indicators, pushbuttons, rotary switches, and keylocks are available with rectangular, square, and round front bezels, plus a selection of lenses, rotary lens caps, and accessories. Legends can be engraved or in the form of film inserts. Actuators are connected to the front panel with a mounting nut; the contact block is soldered directly to the PCB. A locking pin connects the contact block to the actuator. There is no need tor PCB connectors or spacers between the PCB and the front panel. The locking pin (one supplied with each contact block) allows easy assembly and disassembly without special tools. Series 71 switches and indicators typically consist of the basic modular components as shown below. The keylock does not have a lens or rotary knob.

To order: New universal actuators and flush mounting bezels simplify assembling and ordering Series 71 switches and indicators. Simply select a pushbutton, indicator, rotary, or keylock actuator. Then combine the selected actuator with one of the flush mount bezels depending on front appearance (square, rectangular, or round; material; and color). Finish off the assembly by selecting a lens or lens cap, a lamp (if required), and a contact block

Specifications
Contact block	Self-cleaning, double-break, snap-action, 2 x 0.6mm contact opening, gold-plated silver contacts, supplied with one or two 1 N.O., 1 N.C. contact elements
Rating	min: 5 VAC/10 mA max: 250 VAC/3A 24 VDC/3 A
Contact resistance (new)	<50 m ohms
Insulation resistance	>1012ohms
Electric Strength	2500 VAC, 50 Hz, 1 min. between all terminals and ground
Operations (Cycles)	Pushbutton 2-million Rotary 100,000 Keylock 50,000
Sealing	Front: IP 65, contact block: IP 40
Ambient temperature	-25 to 55°C (-12 to 131°F)
Storage temperature	-40 to 85°C (-40 to 185°F)
Soldering heat	manual: 300°C (572°F)/10sec flow: 260°C (500°F)/5 sec
Actuating force	pushbutton: 2-3 N
Actuating torque	rotary and keylock: 2.5-10 Ncm
Travel	pushbutton: 3 mm
Rebound time	<1 msec
Shock proof	according to IEC 68-2-29 and -27 Eb 6-250-3000/3 Ea 18-300-18/3
Vibration resistance	according to IEC 68-2-6 Ec 10'500-0.35/50-30/3
Climatic rating	according to IEC 68-2-3

Momentary pushbutton actuator plus rectangular flush mount bezel and lens	2-position maintained rotary switch actuator plus flush mount round bezel and lens cap
3-position momenatry keylock actuator plus square flush mount bezel and key	2PST 1 N.O./1 N.C. contact block

Order Lamps Seperately.

Series 71 Illuminated Pushbutton & Indicator Actuators Order flush mount bezel, lens, lamp, and contact block or lamp element
Universal Actuator	Part Number
Momentary pushbutton	71-611.0
Maintained pushbutton	71-612.0
Indicator sleeve	71-600.0

Square, Rectangular, and Round Flush Mounting Bezels (Use with Series 71 Actuators)
Description	Material	Color	Part Number
24 x 30 mm Rect.	Plastic	Black	61-9931.0
	Plastic	Chromium	61-9931.4
24 x 24 mm Square	Plastic	Black	61-9930.0
	Plastic	Black	61-9936.0*
	Plastic	Chromium	61-9930.4
25 mm diam. Round	Aluminum	Natural anodized	61-9933.0
	Aluminum	Natural anodized	61-9932.0*
	Aluminum	Black anodized	61-9933.1
	Aluminum	Black anodized	61-9932.1*
	Plastic	Black	61-9933.10
	Plastic	Black	61-9932.10*+

*Required for use with Series 71 rotary switch, no rectangular bezel available.
+Also for keylock
NOTE: Contact Beckwith Electronics for flush mounting panel cutouts

Protective Cover for Pushbuttons & Indicators
Black plastic protective cover	Part Number
	Rectangular	Square	Round
	61-9922.0	61-9921.0	na

Pushbutton & Indicator Lenses
Material	Rectangular 24 x 30 mm	Square 24 x 24 mm	Round 24 mm diam
Plastic (former part no.)	61-9681.� (61-9381.�)	61-9671.� (61-9371.�)	61-9642.�
Aluminum			61-9841.�

Series 71 Contact Blocks
Description	Contacts	Part Number
Lamp element for use with indicator		71-680.006
2 PST, 1 N.O./1 N.C. for use with: pushbutton 2-position rotary 2-position keylock		71-681.026
2 PST, 2 N.O./2 N.C. for use with: pushbutton 3-position rotary 3-position keylock		71-682.026

Series 71 Lighted Two- and Three- Position Rotary Actuators (Order lens cap, lamp, and contact block separately)
Description	Positions	Part Number
2-position Momentary		71-641.0
2-position Maintained		71-642.0
3-position Momentary at C & B		71-651.0
3-position Maintained at C & B		71-652.0
3-position C Maintained B Momentary		71-656.0
3-position C Momentary B Maintained		71-658.0

Rotary Lens Cap � Add color digit
Lens Cap with Transparent Colored Window	Part Number
	Black Lens Cap	Gray Lens Cap
With indicating dot	52-9028.�0	52-9029.�0

Two-Position Keylock Actuators
Momentary	Maintained

Switch Action	Key Removable	Part Number
Momentary	A	71-621.0/D
Maintained	A	71-622.0/D
Maintained	C	71-623.0/D
Maintained	A&C	71-624.0/D

Three Position Keylock Actuators
Action 1 Momentary C&B	Action 2 Maintained C&B	Action 3 Maintained C Momentary B	Action 4 Momentary C Maintained B

Key Removable	Switch Action	Part Number
A	1 2 3 4	71-631.0/D 71-632.0/D 71-636.0/D 71-638.0/D
C	2	71-633.0/D
A&B	4	71-639.0/D
A&C	3	71-637.0/D
B&C	2	71-634.0/D
A&B&C	2	71-635.0/D

Key Cover
Black Plastic Key Cover	Part Number
	Rectangular	Square	Round
	61-9230.0	61-9220.0	61-9210.0