Sierra RK40870 Compact Marine Rocker Switch – (On)-Off-(On), SPDT, Momentary Both Sides, 12/24VDC, AC Rated
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Sierra RK40870 Compact Marine Rocker Switch – (On)-Off-(On), SPDT, Momentary Both Sides, 12/24VDC, AC Rated
The Sierra RK40870 is a compact momentary rocker switch with a (On)-Off-(On) SPDT (Single Pole, Double Throw) configuration. Both active positions are momentary — the switch springs back to center-off as soon as you release it — while routing a single circuit to either of two outputs. This makes it the standard choice for dual-direction momentary control: trim tabs, windlasses, actuators, and any application where you want the action to stop the instant you let go of the switch.
The high-profile rocker action delivers a crisp, positive feel with every press, giving clear tactile confirmation in each direction. Its compact body fits a standard rectangular panel cutout. Rated for both AC and DC operation — 12A at 125V AC, 10A at 250V AC, and suitable for 12V and 24V DC systems.
Key Specifications
- Part Number: 11-RK40870
- Switch Type: Compact Rocker, (On)-Off-(On)
- Circuit Configuration: SPDT (Single Pole, Double Throw)
- Action: Momentary both sides — springs to center-off when released
- AC Rating: 12A at 125V AC / 10A at 250V AC
- DC Rating: Suitable for 12V and 24V DC systems
- Panel Cutout: Standard rectangular
- Note: (On) in parentheses designates a momentary position
Compatible Applications
- Trim tab control requiring momentary single-pole up/down switching
- Windlass or anchor control requiring momentary deploy/retrieve switching
- Any dual-direction, single-circuit momentary function on a marine helm panel
- Marine DC panels for 12V and 24V dual-direction momentary switching
- AC circuit dual-direction momentary switching
- Any panel using a standard rectangular rocker switch cutout
Parts Desk Insights
The RK40870 is the compact series choice for dual-direction momentary control — the circuit is only active while you’re pressing it in either direction, which is the correct and safe behavior for trim tabs and windlasses where you want the function to stop the instant you release the switch. The compact body makes it a practical fit for secondary panels, smaller helm layouts, or any installation where the full-size Contura XIV footprint is too large. For a non-illuminated, non-ignition-protected Contura XIV version of the same (On)-Off-(On) SPDT momentary circuit in a larger switch body, the Sierra RK19060 Contura XIV (On)-Off-(On) SPDT is the full-size alternative. For a maintained On-Off-On SPDT switch in the same compact series, the Sierra RK40850 Compact On-Off-On SPDT is the latching alternative. For a simple momentary single-direction switch, the Sierra RK40830 Compact Off-(On) SPST covers single-direction momentary applications.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.