Sierra RK40620B Marine Rocker Switch – (On)-Off, SPST, Momentary, Blue Halo LED, IP68, 20A
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Sierra RK40620B Marine Rocker Switch – (On)-Off, SPST, Momentary, Blue Halo LED, IP68, 20A
The Sierra RK40620B is a premium marine rocker switch with a (On)-Off SPST (Single Pole, Single Throw) momentary configuration and a blue Halo LED illumination system. The switch springs back to off the instant you release it — there is no maintained on position. This makes it the correct choice for any single-circuit momentary application where you want the premium Halo LED look: horn activation, alarm tests, bilge pump manual overrides, and similar momentary-contact functions.
The Halo LED provides two independent illumination zones: a perimeter ring around the actuator that glows continuously as a backlight, and a separate actuator illumination that activates when the switch is pressed. Sealed to IP68 for full submersion protection. Rated at 20A at 12V DC. Fits industry-standard panel cutouts. Uses a dedicated TE connector with .110 terminals — the Sierra RS20200 Terminal Housing and either the Sierra RS20180 (17-20 AWG) or Sierra RS20190 (13.5-17 AWG) crimp terminals are required for wiring.
Key Specifications
- Part Number: 11-RK40620B
- Switch Type: Rocker, (On)-Off
- Circuit Configuration: SPST (Single Pole, Single Throw)
- Action: Momentary — springs to off when released
- LED Color: Blue
- Illumination: Dual-zone Halo — perimeter ring backlight + actuator illumination when pressed
- Sealing: IP68
- Current Rating: 20A at 12V DC
- Panel Cutout: Industry-standard fit
- Wiring: Dedicated TE connector, .110 terminals (sold separately)
Compatible Applications
- Horn activation requiring a momentary contact switch with premium Halo LED styling
- Alarm test, bilge pump manual override, or other momentary-contact functions on a Halo LED panel
- Marine helm panels where Halo LED consistency across all switches is desired, including momentary functions
- 20A at 12V DC momentary marine accessory circuits
Parts Desk Insights
The RK40620B is the right choice when you need a momentary switch on a Halo LED panel — the circuit is only active while you’re pressing it, which is the correct behavior for horns, alarms, and manual override functions, and the Halo LED styling keeps the panel visually consistent with the maintained Halo switches around it. For the maintained On-Off version of the same Halo SPST switch in blue, the Sierra RK40610B Blue Halo On-Off SPST is the latching alternative. For a dual-circuit DPDT Halo switch in blue, the Sierra RK40700B Halo DPDT On-Off-On covers dual-pole applications. Note that wiring this switch requires the Sierra RS20200 Terminal Housing and the appropriate crimp terminals — standard spade terminals will not fit the dedicated TE connector.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 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.