GO™ Switch - Precision Sensing

Built to last in the most demanding conditions

With all stainless steel construction, flexible AC/DC, NO/NC,

and SPDT/DPDT contact configurations, superior corrosion
resistance, and global certifications for all hazardous areas,
70 Series GO Switches outperform inductive proximity
switches in the toughest applications.

End sensing range can be

extended using external
target magnets.

Sensing face is stainless steel rather

Permanent magnets than plastic, preventing damage due to
incidental physical contact.
Three magnets provide snap action
and solid contact pressure, eliminating
‘contact teasing’ and ‘contact chatter’
in high vibration applications.
English or metric
threads available.

Unique sawtooth contacts are suitable

for high and low electrical loads, and
Sealed contact chamber can be wired AC or DC, N/O or N/C.
prevents moisture or dust
from reaching the contacts. Potting fills the entire switch cavity,
forming a barrier against moisture.

Consumes no power to
One-piece stainless steel
operate and has no current
construction makes this a very
leakage or voltage drop.
durable proximity sensor.
Multiple wiring options:
-Lead Wires
-Cable
-Subsea
-Quick Disconnects

MODEL 73
All 70 Series Models
Temperature Rating:
71-77: -40 °F (-40 °C) to +221 °F (+105 °C) Std.*
71-77,7G, 7H: HiTemp to +400 °F (+204 °C)*
7L: -40 °F (-40 °C) to +160 °F (+71 °C)*

* Reference certificates for variations to temperature rating.

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Model 7G Model 7I
Features Features
• Double Pole Double Throw (DPDT) • Double Pole Double Throw (DPDT)
1.5A/240VAC, 3A/120VAC, 1A/24VDC 1.5A/240VAC, 3A/120VAC, 1A/24VDC
• AC/DC, NO/NC Wiring Flexibility • AC/DC, NO/NC Wiring Flexibility
• -50 °C to +105 °C (-58 °F to +221 °F) • -50 °C to +105 °C (-58 °F to +221 °F)
operating temperature operating temperature
• 2.3 mm (0.090 in) Sensing Distance • 2.3 mm (0.090 in) Sensing Distance
(Ferrous metal) (Ferrous metal)
• 316L Stainless Steel Housings • 316L Stainless Steel Housings
• Dry Contact • Dry Contact
• Intrinsically Safe • Intrinsically Safe
• End Sensing • End Sensing
• Palladium Silver Contacts • Palladium Silver Contacts

Options Options
• Single Pole Double Throw (SPDT) • High Temperature: -50 °C to +204 °C
2A/240VAC, 4A/120VAC, 1A/24VDC (-58 °F to +400 °F)
• High Temperature: -50 °C to +204 °C • Lead Wires or Cables
(-58 °F to +400 °F) • Quick Disconnects – Mini
• Lead Wires or Cables • 5/8” thread
• Hermetic Seal • Global Hazardous Area Approvals
• Quick Disconnects – Mini
• 5/8” or M18 metric thread
• Global Hazardous Area Approvals

Model 77 Model 7L
Features Features
• Single Pole Double Throw (SPDT), • Single Pole Double Throw (SPDT)
2A/240VAC, 4A/120VAC, 3A/24VDC 0.25A/120VAC, 0.25A/24VDC
• AC/DC, NO/NC Wiring Flexibility • AC/DC, NO/NC Wiring Flexibility
• -50 °C to +105 °C (-58 °F to +221 °F) • -40 °C to +71 °C (-40 °F to +160 °F)
operating temperature operating temperature
• 2.5 mm (0.100 in) Sensing Distance • 2.5 mm (0.100 in) Sensing Distance
(Ferrous metal) (Ferrous metal)
• 316L Stainless Steel Housings • End Sensing
• Dry Contact • Stainless Steel 316 Housing
• Intrinsically Safe • Palladium Silver Contacts
• End Sensing
• Palladium Silver Contacts
Options
• Lead Wires or Cables
Options • Quick Disconnects – Mini or Micro
• High Temperature: -50 °C to +204 °C • 5/8” thread
(-58 °F to +400 °F) • CSA/UL Hazardous Area Approvals
• Pressure Rating: 2,000, 5,000, 10,000 PSI
(140, 240, 690 bars)
• Lead Wires or Cables
• SubSea Connectors
• Quick Disconnects – Micro or Mini
• 5/8” or M18 metric thread
• Global Hazardous Area Approvals
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 GO™ Switch Ordering Guide - Precision Sensing
Choose one option from each category to build a complete model number.

Model 71 Model 72 Model 73 Model 74 Model 75 Model 76 Model 77 Model 7G Model 7H Model 7I Model 7L
3/8” diameter 3/8” diameter 13564-A2 5/8” diameter Long Threads Long Threads Long Body DPDT DPDT DPDT BriteLite LEDs

Model Contact Form Sensing Range Outlet Position Enclosure Materials Approvals Wiring Options

1 Single Pole Double Throw (Form C) 3 Standard sensing - .100" end sensing 5 Bottom of enclosure 6 316L stainless steel – HiTemp to 400°F Lead Wires - 18 Gauge, PVC insulated (DPDT- 20 Gauge)
71 3/8" x 3 15/16" - 1/2" NPT conduit
A2 A3 A4 A5 A6 A7 A8
– UL
71M 12M x 100mm - M20 Conduit Entry 2 Double Pole Double Throw 4 .072" end sensing 2 Side entry with (Approval must be 3' 6' 12' 25' 50' 100' 250'
Cl I, Div 1, Grps A-D; Cl II, Div 1, Grps E-G; Cl III
72 3/8" x 3 3/8" - No conduit (Form CC) (Model 7G, 7GM, 7H, & (Models 73, 75, 77, 74, 76, 73M, 2 or 8 and Wiring must be F)
– cULus
7I only) 74M, 75M, 76M, 77M only) Cl I, Div 1, Grps A-D; Cl II, Div 1, Grps E-G; Cl III Cable - 18 Gauge (DPDT = 22 guage)
72M 12M x 86mm - No conduit * For select Models only B2 B3 B4 B5 B6 B7 B8
– UL
73 5/8" x 3 5/8" - 1/2 NPT conduit 5 .060" end sensing 3' 6' 12' 25' 50' 100' 250'
Cl I, Div 2; Grps A-D; Cl II, Div 2; Grps F-G; Cl III
(Models 73, 75, 77, 74, 76, 73M,
73M 18M x 92mm - M20 Conduit Entry 74M, 75M, 76M, 77M; Approvals – cUL General Purpose
Water Resistant Squeeze Connector
74 5/8" x 2 3/4" - No conduit 2, 7, or 8) – UL General Purpose (Models 72, 74, 76 only) (Approval 7 or 8 only)
C2 C3 C4 C5 C6 C7 C8
74M 18M x 70mm - No conduit – ATEX/IEC Ex Zone 1
6 .040" end sensing 3' 6' 12' 25' 50' 100' 250'
Ex db IIC T6 Gb, Ex tb IIIC T85°C Db, IP66 (-40°C ≤ Ta ≤
75 5/8" x 4 5/16" - 1/2" NPT conduit (Models 71 & 72 only) 50°C)
Ex db IIC T4 Gb, Ex tb IIIC T135°C Db, IP66 (-40C ≤ Ta ≤ Mini Change Connector (Models 71, 73, 75, 77, 7G only)
75M 18M x 110mm - M20 Conduit Entry 100°C) (Approval 7 or 8 only; 3 pin is 8 only)
Ex db IIC T3 Gb, Ex tb IIIC T200°C Db, IP66 (-40C ≤ Ta ≤ DCA 3 pin
76 5/8" x 3 3/16" - No conduit
150°C) DCD 4 pin
76M 18M x 81mm - No conduit hub Temperature ranges are dependent on model and wiring
Micro Change Connector (Models 72, 74, 76)
type, final cert may differ. Kindly consult TopWorx
77 3/4" x 5 13/16" - 1/2" NPT conduit (Approval 7 or 8 only; 3 pin is 8 only)
– ATEX/IEC Ex Zone 1 DBA 3 pin
7G 5/8" x 4" - 1/2" NPT conduit Ex db IIC T6 Gb, Ex tb IIIC T85°C Db, IP66 (-40°C ≤ Ta ≤ DBD 4 pin
7GM 18M x 102mm - M20 Conduit Entry 50°C)
Ex db IIC T6 Gb, Ex tb IIIC T85°C Db, IP66 (-60°C ≤ Ta ≤ SubSea Connector
50°C) (Models 73, 75, 77) (Approval 7 or 8 only; 3 pin is 8 only)
7H 5/8" x 3 1/4" - No conduit
Ex db IIC T4 Gb, Ex tb IIIC T135°C Db, IP66 (-40°C≤ Ta ≤ 3DD 3 pin
7I 1'' x 5 5/8'' - 1/2'' NPT conduit 4DD 4 pin
100°C)
8DD 8 pin (7G only)
Ex db IIC T3 Gb, Ex tb IIIC T200°C Db, IP66 (-40°C≤ Ta ≤
7LG 5/8" x 4 3/4" - 1/2'' NPT conduit 3DE 3 pin 90°
150°C) 4DE 4 pin 90°
7LR 5/8" x 4 3/4" - 1/2'' NPT conduit – ATEX/IEC Ex Zone 0Ex ia IIC T6 Ga Ex iD IIIC T85C Da
(-40°C ≤ Ta ≤ 50°C) Hi-Temp Leads (Teflon™ insulated) 18 Gauge
(DPDT = 20 gauge)
– ATEX/IEC Ex Zone 0, Ex ia IIC T4 Ga, Ex iD IIIC T135C Da F2 F3 F4 F5 F6 F7 F8
(-40°C ≤ Ta ≤ 100°C)
3' 6' 12' 25' 50' 100' 250'
– ATEX/IEC Ex Zone 0, Ex ia IIC T3 Ga
(-40°C ≤ Ta ≤ 150°C) Hi-Temp Leads (Peek insulated) (Models 71-77)
H2 H3 H4 H5 H6 H7 H8
More certifications available - consult TopWorx for a full list of 3' 6' 12' 25' 50' 100' 250'
Global and Regional Approvals

*Approvals are model specific. Please contact your TopWorx * Raychem, Silicone (Blue) and other QDC options available.
distributor or consult the price guide to build a part number ** Wiring options are model specfic. Please contact your
Ordering Guide with specific approval. TopWorx distributor to select a specific wiring option.

Fill in each box to create a **Note: Lead seal not req’d for hermetically sealed contacts
(Contact Form 1).
complete model number.

Model Contact Form Sensing Range Outlet Position Enclosure Materials Approvals Wiring Options

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