---
product_id: 566121218
title: "SPX Flow Ultima Switch 20 A 12/24 V Electronic Automatic Switch Johnson Pump for Bilge Pump Heavy Duty, Boat Pump, Ship Pump, Yacht Pump"
brand: "spx flow"
price: "HK$1160"
currency: HKD
in_stock: true
category: "Spx Flow"
url: https://www.desertcart.hk/products/566121218-spx-flow-ultima-switch-20-a-12-24-v-electronic
store_origin: HK
region: Hong Kong
---

# SPX Flow Ultima Switch 20 A 12/24 V Electronic Automatic Switch Johnson Pump for Bilge Pump Heavy Duty, Boat Pump, Ship Pump, Yacht Pump

**Brand:** spx flow
**Price:** HK$1160
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** SPX Flow Ultima Switch 20 A 12/24 V Electronic Automatic Switch Johnson Pump for Bilge Pump Heavy Duty, Boat Pump, Ship Pump, Yacht Pump by spx flow
- **How much does it cost?** HK$1160 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/566121218-spx-flow-ultima-switch-20-a-12-24-v-electronic)

## Best For

- spx flow enthusiasts

## Why This Product

- Trusted spx flow brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

The SPX FLOW Johnson Pump automatic switch protects electrically operated pumps and provides fully automatic operation. Ultima Switch activates at a liquid level of 50 mm (2") and deactivates at a liquid level of 20 mm (¾"). A delay of three seconds prevents false starts. The electronic automatic switch Ultima Switch uses the patented Mirus field effect detector cells that generate microelectric fields that detect interference caused by water and liquids. The detector cells are sealed and never come into contact with water, do not rust or are attacked by oil or foreign bodies Limited 3-year warranty No moving parts, fully sealed solid state electronics and field detectors Environmentally sensitive, no mercury No exposed sensors prevent corrosion possibilities. Activates at a liquid level of 50 mm (2 inches) and deactivated at a liquid level of 20 mm (¾ inches). A delay of three seconds prevents false starts caused by spilling water in the bilge. Ultima Switch is designed for pumps up to 20A at 12V or 10A at 24V The automatic switch protects against electrically operated device pumps and allows fully automatic operation. Technical data and performance data. For fully automatic bilge pump operation, connect the automatic switch to your bilge pump. The automatic switch has a proven micro switch without mercury. When the water exceeds the acceptable level, the pump is switched on by a rolling steel ball that changes the pressure on the micro switch The Ultima switch attaches to any SPX FLOW Johnson Pump bilge pump using the clip on the "T-slot". Can be used with 12 or 24 V systems Max Amplifier: 20A SPX FLOW Johnson Pump bilge pumps have a T-slot on the housing or mounting bracket. This is for attaching the AS888. If necessary, you can still secure the switch with a small drop of waterproof adhesive. Only if no T-slot is available, screws are recommended for attaching the switch to the pump The switch should always be attached parallel to the bilge base, with the float facing directly backwards. Never lower the switch than on the inlet height of the bilge pump

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C998DVYB |
| Best Sellers Rank | 246,124 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 182 in Boat Bilge Pumps |
| Colour | Black |
| Date First Available | 25 Jun. 2023 |
| Included Components | The electronic automatic switch |
| Item model number | 34-36603 |
| Manufacturer | SPX Flow US LLC |
| Material | Plastic |
| Part Number | 34-36603 |
| Power Source | Corded Electric |
| Product Dimensions | 0.76 x 5.08 x 0.51 cm |
| Style | Unique |
| Voltage | 12 Volts (DC) |

## Product Details

- **Brand:** SPX FLOW
- **Colour:** Black
- **EU Spare Part Availability Duration:** 25 Years
- **Manufacturer:** SPX Flow US LLC
- **Material:** Plastic
- **Power source:** Corded Electric
- **Style:** Unique
- **Voltage:** 12 Volts (DC)

## Images

![SPX Flow Ultima Switch 20 A 12/24 V Electronic Automatic Switch Johnson Pump for Bilge Pump Heavy Duty, Boat Pump, Ship Pump, Yacht Pump - Image 1](https://m.media-amazon.com/images/I/417PSJb6VtL.jpg)
![SPX Flow Ultima Switch 20 A 12/24 V Electronic Automatic Switch Johnson Pump for Bilge Pump Heavy Duty, Boat Pump, Ship Pump, Yacht Pump - Image 2](https://m.media-amazon.com/images/I/41KKo1DCUJL.jpg)
![SPX Flow Ultima Switch 20 A 12/24 V Electronic Automatic Switch Johnson Pump for Bilge Pump Heavy Duty, Boat Pump, Ship Pump, Yacht Pump - Image 3](https://m.media-amazon.com/images/I/41dPsSbHmkL.jpg)
![SPX Flow Ultima Switch 20 A 12/24 V Electronic Automatic Switch Johnson Pump for Bilge Pump Heavy Duty, Boat Pump, Ship Pump, Yacht Pump - Image 4](https://m.media-amazon.com/images/I/41lVv9DcBGL.jpg)
![SPX Flow Ultima Switch 20 A 12/24 V Electronic Automatic Switch Johnson Pump for Bilge Pump Heavy Duty, Boat Pump, Ship Pump, Yacht Pump - Image 5](https://m.media-amazon.com/images/I/514KjvpSVEL.jpg)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-23*