OTTO B5 Double Break Basic Switch Details

Offering switching capabilities of up to 100,000 cycles, this is a reliable Double Break Miniature Switch. The OTTO B5 Double Break Switches provide up to 10 amps, complete with button to accept actuation directly from a cam. KEY FEATURES • Up to 10 amps Switching • High Contact Pressure • UL Recognised & CSA Certified OTTO B5 Double Break Miniature Switches offer both commercial & military grades options, available with a variety of terminal styles.


The OTTO B5 Switches provide switching capabilities of up to 100,000 cycles. Available in commercial & military grades options, with a variety of terminal style choices.

Providing up to 10 amps, the OTTO B5 Double Break Miniature Switch Button features is designed to accept actuation directly from a cam.


Up to 10 amps switching capability
High contact pressure
Precision operating points
Button accepts actuation directly from cam
Constructed in accordance with MIL-PRF-8805/7
Available in Commercial & Military grades
Choice of four standard terminal styles or wire leads
UL recognized & CSA certified
B5-21141 qualified to MS27217-1
RoHS/WEEE/Reach compliant


Circuitry: Sea Level @ 28VDC/70000 @ 28VDC/Sea Level @ 115VAC, 60/400Hz*
SPNO-DB & SPNC-DB - Resistive: 10A/10A/10.1A
SPNO-DB & SPNC-DB  - Inductive*: 7.5A/3.5A/5A
SPNO-DB & SPNC-DB  - Lamp: 1A/NA/3A
SPDT-DB 2 Circuit - Resistive: 10A/10A/10.1A
SPDT-DB 2 Circuit - Inductive* 5A/2A/5A
SPDT-DB 2 Circuit - Lamp 3A
SPDT - Resistive: 10A/10A/10.1A
SPDT - Inductive*: 3A/1.5A
SPDT - Inductive - Lamp: 3A
*L/R = 0.026
DWV 1000Vrms/400Vrms
Electrical Life:  100,000 cycles
Mechanical Life:  1,000,000 cycles
Seal:  Unsealed
Operating Temp Range:  -65°C to +125°C
Operating Force:  5 oz, +3/-2 oz or 6 oz max or 3 oz min
Release Force:  2 oz min
Operate Point:  0.406 +/- 0.010 inches from mounting holes
Overtravel:  0.012 inches min
Movement Differential:  0.020 +/- 0.005 inches
Pretravel:  0.050 inches max


Case:  Thermoset, blue
Cover:  Thermoset, blue
Button:  Thermoplastic, black
Terminals:  Brass with bright acid tin plating
Contacts:  Stationary: Silver with gold/Moveable: Silver with gold
Terminal Hardware:  None provided, optional wires
Mounting Hardware:  None provided