Toggle switch BLOW 3915# 3A 250V on-off-on SPDT rocker switch

BLOW 3915# is an on-off-on rocker (toggle) switch designed for manual selection between two circuits with a central off position. Rated for 3 A at 250 V AC, it implements an SPDT contact configuration and has a compact form factor suitable for panel or chassis mounting. The switch body accepts standard wire terminations and provides a simple, reliable means to route low-current signals or power in small appliances, control panels and electronic projects.

Advantages

The BLOW 3915# switch offers a three-position on-off-on arrangement that allows quick switching between two outputs while isolating both when in the middle position. Its SPDT configuration provides flexibility for routing or selecting circuits without additional wiring complexity. With a 3 A, 250 V rating the switch is appropriate for low-current control tasks; the rocker actuator gives a clear tactile position feedback for repeatable operation. The compact design enables installation in limited panel space and standard terminals make connection straightforward.

Suitable for

• Small household appliances and consumer electronics control panels
• DIY electronics and hobby projects requiring a manual selector
• Low-current signal routing in instrumentation and test fixtures
• Chassis- or panel-mounted controls in low-voltage systems

Key specifications

• Switch type: Rocker / toggle, three-position (on–off–on)
• Contact arrangement: Single Pole Double Throw (SPDT)
• Rated current: 3 A
• Rated voltage: 250 V AC
• Mounting style: Panel or chassis mounting (compact footprint)
• Actuator: Rocker for manual operation with tactile feedback
• Terminals: Standard wiring terminals for solder or push-on connectors

How to use

Mount the switch into the panel cutout or chassis opening appropriate for its size and secure it according to the device’s mechanical attachment method. Connect supply and load conductors to the common and the two throw terminals according to the circuit requirements; ensure connections are secure and properly insulated. Operate the rocker to select one output, the off position, or the alternate output as needed. Observe the rated 3 A, 250 V limit and avoid using the switch in circuits that exceed these electrical ratings.

Usage recommendations

Use the switch in dry, indoor environments and avoid exposure to excessive dust, moisture, or corrosive atmospheres. For long-term reliability, do not exceed the specified current and voltage ratings and perform periodic inspection of terminals for loosening or oxidation. When used in panels, confirm the cutout dimensions and clearance before installation and, if necessary, use appropriate strain relief or cable routing to prevent mechanical stress on the terminals.