Subsea GO Switch alternatives
Specify a DepthLink sensing and cable solution for subsea valve, actuator and mechanism feedback. If your installation currently uses a GO Switch, send the complete reference and target arrangement so we can assess the replacement requirement.
Start with the target, not just the thread.
GO Switch uses magnetic attraction to respond to ferrous metal or a magnetic target. That distinction matters when selecting an alternative. The DepthLink Nano M12 requires a target magnet; it is not a direct substitute for every ferrous-target installation.
Target and sensing gap
Identify whether the existing target is ferrous metal or a magnet. The Nano M12 offers approximately 12 mm with the MT-01 target magnet. Include the available space for the target and its approach direction.
Switch circuit
State NO, NC or changeover operation, actual voltage and load, and whether redundant contacts are required. Confirm the exact device configuration rather than transferring another model’s ratings.
Subsea connection
Send the installed connector reference and pin allocation. We can scope a switch with a matching project cable requirement; existing GO Switch cable compatibility must be checked separately.
Compare the installed requirement with the proposed solution.
Use these six checks to identify what can stay and what needs changing. These are selection routes, not verified part-for-part equivalents.
| Selection point | Record from the installed equipment | DepthLink route and practical difference |
|---|---|---|
| Sensing action | Target material, approach direction, operating gap and release point. | Nano M12 uses a target magnet; approximately 12 mm with the optional MT-01. A plain metal target is not equivalent. |
| Mounting envelope | Thread and pitch, mounting drawing, sensing-face location and space for mating and removing the cable. | Select the body and connector together. A similar thread diameter does not establish identical fit or sensing position. |
| Electrical output | NO, NC or changeover contacts; voltage, switching load and required normal state. | Nano M12 offers SPDT dry contacts. Compare the actual control input and load before changing the circuit. |
| Connector and wiring | Exact mating-half reference, keying, contact arrangement, pin functions, sealing and cable termination. | Nano, Micro Straight, Micro 90° and Circular describe distinct interfaces. Review the actual mating pair and pinout; matching pin count alone is insufficient. |
| Wetted materials | Body, connector shell, mounting, target carrier, cable jacket and seal requirements. | Review the complete wetted assembly against seawater exposure and neighbouring materials. A connector material does not describe the whole switch body. |
| Pressure and immersion | Operating pressure/depth, temperature, continuous immersion and any required test evidence. | Nano M12 stainless-steel configuration: 700 bar external pressure, approximately 7,000 m seawater. Agree the complete switch, mating connector and cable duty. |
Model numbers & configuration references
Looking for an alternative to one of these references? Send the full part number and drawing to DepthLink with your enquiry. We will assess the sensing action, mounting, electrical output and subsea connection together.
| Reference | Reference type | What to identify | Next step |
|---|---|---|---|
| GO Switch 11 | Model family | Subsea connector configurations appear in the ordering guide. Send the complete nameplate code. | Assess this reference ↗ |
| GO Switch 21 | Model family | Subsea connector configurations appear in the ordering guide. Send the complete nameplate code. | Assess this reference ↗ |
| GO Switch 73 | Model family | Subsea connector configurations appear in the ordering guide. Send the complete nameplate code. | Assess this reference ↗ |
| GO Switch 75 | Model family | Subsea connector configurations appear in the ordering guide. Send the complete nameplate code. | Assess this reference ↗ |
| GO Switch 77 | Model family | Subsea connector configurations appear in the ordering guide. Send the complete nameplate code. | Assess this reference ↗ |
| GO Switch 81 | Model family | Subsea connector configurations appear in the ordering guide. Send the complete nameplate code. | Assess this reference ↗ |
| 3DD | Connector suffix | 3-pin inline subsea termination; model and approval restrictions apply. | Assess this reference ↗ |
| 4DD | Connector suffix | 4-pin inline subsea termination; model and approval restrictions apply. | Assess this reference ↗ |
| 3DE | Connector suffix | 3-pin right angle subsea termination; model and approval restrictions apply. | Assess this reference ↗ |
| 4DE | Connector suffix | 4-pin right angle subsea termination; model and approval restrictions apply. | Assess this reference ↗ |
| 8DD | Connector suffix | 8-pin inline subsea termination; model and approval restrictions apply. | Assess this reference ↗ |
| 73-13567-4DD | Published-rule code expansion | SPDT, standard sensing, bottom outlet, 316L body; subsea termination 4DD. Expanded from the ordering guide, not a verified stocked SKU. | Assess this reference ↗ |
| 73-13567-4DE | Published-rule code expansion | SPDT, standard sensing, bottom outlet, 316L body; subsea termination 4DE. Expanded from the ordering guide, not a verified stocked SKU. | Assess this reference ↗ |
| 73-13568-3DD | Published-rule code expansion | SPDT, standard sensing, bottom outlet, 316L body; subsea termination 3DD. Expanded from the ordering guide, not a verified stocked SKU. | Assess this reference ↗ |
| 73-13568-3DE | Published-rule code expansion | SPDT, standard sensing, bottom outlet, 316L body; subsea termination 3DE. Expanded from the ordering guide, not a verified stocked SKU. | Assess this reference ↗ |
| 73-13568-4DD | Published-rule code expansion | SPDT, standard sensing, bottom outlet, 316L body; subsea termination 4DD. Expanded from the ordering guide, not a verified stocked SKU. | Assess this reference ↗ |
| 73-13568-4DE | Published-rule code expansion | SPDT, standard sensing, bottom outlet, 316L body; subsea termination 4DE. Expanded from the ordering guide, not a verified stocked SKU. | Assess this reference ↗ |
| 75-13567-4DD | Published-rule code expansion | SPDT, standard sensing, bottom outlet, 316L body; subsea termination 4DD. Expanded from the ordering guide, not a verified stocked SKU. | Assess this reference ↗ |
| 75-13567-4DE | Published-rule code expansion | SPDT, standard sensing, bottom outlet, 316L body; subsea termination 4DE. Expanded from the ordering guide, not a verified stocked SKU. | Assess this reference ↗ |
| 75-13568-3DD | Published-rule code expansion | SPDT, standard sensing, bottom outlet, 316L body; subsea termination 3DD. Expanded from the ordering guide, not a verified stocked SKU. | Assess this reference ↗ |
| 75-13568-3DE | Published-rule code expansion | SPDT, standard sensing, bottom outlet, 316L body; subsea termination 3DE. Expanded from the ordering guide, not a verified stocked SKU. | Assess this reference ↗ |
| 75-13568-4DD | Published-rule code expansion | SPDT, standard sensing, bottom outlet, 316L body; subsea termination 4DD. Expanded from the ordering guide, not a verified stocked SKU. | Assess this reference ↗ |
| 75-13568-4DE | Published-rule code expansion | SPDT, standard sensing, bottom outlet, 316L body; subsea termination 4DE. Expanded from the ordering guide, not a verified stocked SKU. | Assess this reference ↗ |
| 77-13567-4DD | Published-rule code expansion | SPDT, standard sensing, bottom outlet, 316L body; subsea termination 4DD. Expanded from the ordering guide, not a verified stocked SKU. | Assess this reference ↗ |
| 77-13567-4DE | Published-rule code expansion | SPDT, standard sensing, bottom outlet, 316L body; subsea termination 4DE. Expanded from the ordering guide, not a verified stocked SKU. | Assess this reference ↗ |
| 77-13568-3DD | Published-rule code expansion | SPDT, standard sensing, bottom outlet, 316L body; subsea termination 3DD. Expanded from the ordering guide, not a verified stocked SKU. | Assess this reference ↗ |
| 77-13568-3DE | Published-rule code expansion | SPDT, standard sensing, bottom outlet, 316L body; subsea termination 3DE. Expanded from the ordering guide, not a verified stocked SKU. | Assess this reference ↗ |
| 77-13568-4DD | Published-rule code expansion | SPDT, standard sensing, bottom outlet, 316L body; subsea termination 4DD. Expanded from the ordering guide, not a verified stocked SKU. | Assess this reference ↗ |
| 77-13568-4DE | Published-rule code expansion | SPDT, standard sensing, bottom outlet, 316L body; subsea termination 4DE. Expanded from the ordering guide, not a verified stocked SKU. | Assess this reference ↗ |
Published configuration options by model
These pairings identify model and termination options, not complete order codes. Models 11, 21 and 81: enclosure 2 or 4 and approval 7 or 8. Models 73, 75 and 77: 3-pin options require approval 8; 4-pin options permit approval 7 or 8. Confirm the complete supplied configuration.
- GO Switch 11: 3DD, 4DD, 3DE, 4DE
- GO Switch 21: 3DD, 4DD, 3DE, 4DE
- GO Switch 73: 3DD, 4DD, 3DE, 4DE
- GO Switch 75: 3DD, 4DD, 3DE, 4DE
- GO Switch 77: 3DD, 4DD, 3DE, 4DE
- GO Switch 81: 3DD, 4DD, 3DE, 4DE, 8DD
Model families, connector suffixes and accessories are identified separately from complete switch part numbers. Custom configurations are not exhaustively listed. Inclusion does not imply a drop-in replacement or transfer any competitor rating to a DepthLink product.
A DepthLink solution around your equipment.
Nano M12 proximity switch
Compact magnet-operated switching with an optional MT-01 target.
View product ↗Subsea cable assemblies
Define connector format, pin allocation, cable length and equipment termination.
Explore cabling ↗Configured materials & interfaces
Review stainless steel, titanium and other specified alloys for the actual assembly.
Material options ↗Relevant underwater applications
Before choosing an alternative
Can DepthLink replace my subsea GO Switch?
DepthLink can assess an alternative for the application. Provide the exact model, target, circuit, mounting and underwater connector details. A change of target or cable may be required.
Can I keep my existing target?
That depends on the selected switch. The Nano M12 is magnet-operated and requires a suitable target magnet, such as MT-01; a plain metal target is not equivalent.
DepthLink is an independent supplier. GO Switch / TopWorx names identify the existing equipment or requirement; no affiliation, endorsement or automatic interchangeability is implied.
Send us the reference. Tell us what must stay.
Include the part number, drawing or datasheet, required quantity and delivery date. Tell us which mounting, target, connector and control-system interfaces need to remain unchanged.