OMRON A7BS / A7BL catalog

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For ordering in Singapore, please note some product models not sold in Singapore may be included in the following catalog(s) for our global customers.

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Catalog Name	Catalog Number [size]	Last Update
A7BS, A7BL Data Sheet	- [498KB]	Apr 01, 201620160401	A7BS, A7BL Data Sheet

OMRON A7BS / A7BL dimension

last update: September 24, 2012

Switches

A7BS-2[][](-1)
Solder Terminals

Note:Note:

Note:The dimensions above include both End Caps, and will increase 8 mm for each Spacer inserted.

Note:Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions.
The tolerance for multiple connection is ±(number of units x 0.4) mm.

Thumbwheel Switches with External Stoppers:
A7BS-20[]-S(-1)

Use A7BS-S Stopper Pins to make dial display restrictions for these Switches.
Insert the Stopper Pins in the positions required to give the desired display range. For example, for a display range of 0 to 5, insert a Stopper Pin at position 1 (see following diagram) to stop the display from going above 5 when the (+) button is pressed, and insert a Stopper Pin at position 2 to stop the display from going below 0 when the (-) button is pressed.

Note:If the output code is 06, the dimension is 32.5;
if the output code is 07, the dimension is 43.5.

Stopper Pins

Note:Note:

Note:Two pins constitute one set.

Note:The first shipment is free and is attached to the Switch.
Order the A7BS-S separately if it is required for maintenance.

A7BL-206(-1)
A7BL-207(-1)
Solder Terminals,
Locking Models

Note:Note:

Note:The dimensions above include both End Caps, and will increase 8 mm for each Spacer inserted.

Note:Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions.
The tolerance for multiple connection is ±(number of units x 0.4) mm.

Accessories (Order Separately)

End Caps for Push-operated Switches
A7B-M(-1) Snap-in Panel Mounting

Spacers for Push-operated Switches
A7B-P[](-1) Snap-in Panel Mounting

Note:The [] in the Spacer model number stands for a letter in the range A to U. (Refer to the table under the explanation about Spacers on Lineup.)

Connectors

Note:(These devices allow Switches to be quickly removed for maintenance and inspection of connectivity, and quickly re-installed.)

A7B-C
Solder Terminals

A7B-CP
PCB Terminals

Inserting Connectors

Insert Connectors with the "UP" arrow pointing up.

Note:Unless otherwise indicated, dimensional tolerances for dimensions in the models above are ± 0.4 mm.

last update: September 24, 2012

OMRON A7BS / A7BL specification

last update: August 20, 2014

Switching capacity (resistive load)		3.3 to 28 VDC or 50 VAC 1 mA to 0.1 A
Continuous carry current		1 A max.
Contact resistance		300 mΩ max.
Insulation resistance	Between non-connected terminals	10 MΩ min. (at 500 VDC)
	Between terminal and non-current carrying part	1,000 MΩ min. (at 500 VDC)
Dielectric strength	Between non-connected terminals	600 VAC, 50/60 Hz for 1 min
	Between terminal and non-current carrying part	1,000 VAC, 50/60 Hz for 1 min
Vibration resistance		10 to 55 Hz, 1.5-mm double amplitude
Shock resistance		490 m/s2 min.
Durability	Mechanical	100,000 operations min.
	Electrical	50,000 operations min.
Ambient temperature		Operating: -10°C to 65°C (with no icing) Storage: -20°C to 80°C
Ambient humidity		Operating: 45% to 85%
Max. operating force		5.39 N max.

last update: August 20, 2014

OMRON A7BS / A7BL lineup

last update: April 01, 2016

Switches (Single Switch Units)

Model	A7BS		A7BS-20[]-S
Classification (See note 1.)	Snap-in (front mounting)		Snap-in (front mounting) With external stoppers
Character height	Decimal: 4.8 mm Hexadecimal: 3.2 mm		4.8 mm
Terminals	Solder terminals *1
Color	Light gray	Black	Light gray	Black
Output code number	Model
06 (binary coded decimal)	A7BS-206 *2	A7BS-206-1 *2	A7BS-206-S	A7BS-206-S-1
07 (binary coded decimal, with component adding provision) *3	A7BS-207 *2	A7BS-207-1 *2	A7BS-207-S	A7BS-207-S-1
54 (binary coded hexadecimal)	A7BS-254	A7BS-254-1	---	---
55 (binary coded hexadecimal, with component-adding provision) *3	A7BS-255	A7BS-255-1	---	---

Model	A7BL
Classification (See note 1.)	Snap-in (front mounting) Locking type
Character height	4.8 mm
Terminals	Solder terminals *1
Color	Light gray	Black
Output code number	Model
06 (binary coded decimal)	A7BL-206 *2	A7BL-206-1 *2
07 (binary coded decimal, with component-adding provision) *3	A7BL-207 *2	A7BL-207-1 *2

Note: 1. The classification diagrams show 4 Switch Units combined with End Caps to create 4-digit displays.
         2. The model numbers given above are for Switch Units.
         3. Models with +, - displays can also be produced. Add “-PM” after the “206” or “207” in the model number
           (e.g., A7BS-206-PM or A7BS-207-PM-1).
*1. For models with PCB terminals, add “-P2” to the model number (e.g., A7BS-207-P2-1).
*2. Models with internal stoppers are also available. Add “-S[][]” after the “206” or “207” in the model number and specify
       the display range in the [][]. For example, to specify the range 0 to 6, add “-S06” to the model number (e.g.,
       A7BS-206-S06-1).
       For structural reasons, models with stoppers cannot be manufactured for the A7BS-254 and A7BS-255.
*3. Models with diodes are available. Add “-D” to the model number (e.g., A7BS-207-D or A7BS-207-D-1).

Accessories (Order Separately)

Use accessories, such as End Caps, Spacers, and Connectors with the Switch Units.

End Caps, Spare Units, and Connectors

Accessory	Color	Light gray	Black
End Caps (1 pair)		A7B-M	A7B-M-1
Spacer		A7B-P[] *	A7B-P[]-1 *
Connectors	Solder terminals	A7B-C
	PCB terminals	A7B-CP

* The [] in the Spacer model number stands for a letter in the range A to U. (Refer to the table in the following
  explanation about Spacers.)

End Caps

End Caps are used on the Switch Units at each end and allow all the Switch Units to be securely mounted to a panel. They come in pairs, one for the left and one for the right.

Spacers

• Spacers are used for creating extra space or gaps between the Switch Units and have the same dimensions as the Switch Units themselves.
• There are also Spacers with engraved characters or symbols that can be used for indicating units, such as time and length. (Refer to the following table.) Consult your OMRON representative for details.

Symbol	A	B	C	D	E	F	G	H	J	K	L	Q	T	U
Stamp	No designation	SEC	MIN	H	g	kg	mm	cm	m	°C	PCS	x 10 SEC	0	●

last update: April 01, 2016

• NO. A7BS / A7BL
• TYPE:Thumbwheel Switches Copyright Statement Copyright Statement
• DATE:2021-06-12
• Associated products:
  A7CN / A7CN-L Thumbwheel Switch/Features A7PS / A7PH Thumbwheel Switch/Features