38BM-4-H-4-S

Color - Actuator/Cap:	White
Electrical Life:	80,000 Cycles
Mechanical Life:	80,000 Cycles
Operating Temperature:	-30°C ~ 85°C
Panel Cutout Dimensions:	--
Features:	Sealed - Fully
Ingress Protection:	--
Termination Style:	Gull Wing
Mounting Type:	Surface Mount, Right Angle
Illumination Voltage (Nominal):	--
Illumination Type, Color:	--
Series:	38BM
Actuator Type:	Round, Plunger
Voltage Rating - DC:	28V
Voltage Rating - AC:	120V
Current Rating:	1A (AC/DC)
Switch Function:	Off-Mom
Circuit:	SPST-NO
Type:	Standard
Part Status:	Active
Packaging:	Bulk

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Introduction

The 38BM-4-H-4-S is a type of pushbutton switch from the series of OMNEX switches. It is designed to provide several solutions for high-reliability, safety-critical applications in the industrial, marine, offshore and emergency vehicular markets. Pushbutton switches such as these provide the user with a secure way to operate any machinery or equipment efficiently and safely, with the assurance of circuit integrity to the highest standards.

Application Field

The 38BM-4-H-4-S is well suited for use in applications such as heavy-duty industrial and marine applications, automation, energy management, medical devices and transportation. Due to its high-reliability and robust construction, it is ideal for use in applications where failure of the switch could result in severe damage or cause personal injury. The switch is also suitable for use in environments with extreme temperatures and in places where mechanical shock and vibration are present.

Working Principle

The 38BM-4-H-4-S utilizes two separate switches, an ungrounded momentary switch and a grounded momentary switch, providing two separate levels of protection. The switch has a single actuator button that must be pressed twice to activate the switch. The first press will activate the ungrounded switch, disengaging the previously held contacts, and the second press completes the circuit by engaging the grounded switch. This ensures the user that the contacts are not going to accidentally jump back into the held position before completion of the circuit. The momentary switch allows not only signal transfer, but also motor or solenoid starts, speed selection, and timing features to be accomplished. The switch also has the ability to be configured with other contact combinations such as SPST (single pole single throw) or SPDT (single pole double throw) to provide more specific control.

Conclusion

The 38BM-4-H-4-S pushbutton switch is a heavy duty switch designed to be used in high-reliability, safety-critical applications. The ability of the switch to be configured with various contact configurations, as well as its ability to be used in environments with extreme temperatures, mechanical shocks and vibrations make it an ideal choice for demanding applications. The dual switch system provides a secure method of operation and prevents accidental activation.

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