Honeywell GKMA33 MICRO SWITCH™ Key-Operated Safety Interlock Switch

• Customization: Available
• Certification: ISO9001, CE, CCC
• Manufacturer: Honeywell
• Model NO.: GKMA33
• Description: Dual entry key operated safety interlock switch
• Illuminated: Non-Illuminated
• Condition: Original New
• Series: GK Series
• Contact Form: SPDT
• Rated operational current (Ie): 1.5 A, 0.27 A
• Voltage Rating AC: 240 VAC
• Voltage Rating DC: 250 VDC
• Termination Style: Wire Lead
• Operating Temperature: -25 °C to 85 °C
• Environmental sealing: IP 66/67
• ctuator Key Material: Stainless Steel
• Transport Package: Carton
• Trademark: Honeywell

Product Description

When the application requires a miniature key-operated safety interlocking limit switch for machine guarding, Honeywell  provides the GKM Series. The compact housing size of 34 mm L x 16 mm W x 70 mm H is optimal where there is limited space available on machinery. The double-insulated plastic housing and rugged stainless steel actuator key are better suited for demanding environments. The unique design of the switch allows the actuator key to be inserted from the top or the side. The switch can be mounted from the front or back as required. As with the Honeywell safety limit switches, all normally closed contacts are positive opening. Direct mechanical linkage within the switch force the normally closed contacts open when the actuator key is removed from the switch, opening the circuit. The switches are available with either a cable connection or an integral four-pin M12 connector.
 

FEATURES

• Red switch body for easy safety recognition

• Common 22 mm mounting centers which accept M4 or #8 mounting hardware

• Prewired cable or M12 connector for electrical termination

• Positive opening action of normally closed contacts to EN/IEC 60947-5-1-3 specification

• Switch chamber IP67 environmentally sealed for indoor or outdoor applications

• CE and UL certifications

• Designed and agency evaluated for safety functions up to and including a SIL3 level
 

POTENTIAL APPLICATIONS

• Safety interlock for small doors and apertures on machinery

• Safety interlock for multiple doors on machinery with daisy chain option (twin connectors)
 

DIFFERENTIATION

• Miniature package size of 34 mm L x 16 mm W x 70 mm H

• Switch design with dual entry (side or top) for actuator key

• Daisy-chain capability for monitoring multiple gates on machinery

• Rigid or flexible stainless steel actuator keys

Performance Specifications

Characteristic			Parameter
Description			Dual entry key-operated safety interlockswitch
Agency certifications			CE, DOC 141 (EN60947-1 and EN 60947-5-1) cULus, UL508 (File E37138) SIRA, Functional Safety Certificate (IEC 61508-2:2010)
Housing material			Red glass-filled polyester body, black glass-filled polyamide actuator housing
Actuator key material			Stainless steel
Electrical connection			Side or bottom exit cable (UL rated 105 °C with PVC jacket and cores four conductor 0.5 mm², 20 AWG). Side or bottom exit integral M12 Micro 4-pindc-style connector, Side and bottom exit (twin connectors) integral M12 Micro 4-pindc style connectors for daisy chaining and mon- itoring multiple doors
Contact/switch options¹			1NC/1NO slow action BBM, 2NC slow action
Contact design			Double break, electrically separated (Zb)
Contact material			Silver alloy (standard), gold-plated (low energy applications)
Electrical ratings			See Table 2
Utilization category			AC-15, B300; DC-13, Q300
Rated operational voltage (Ue)			240 Vac, 250 Vdc
Rated operational current (Ie)			1.5 A, 0.27 A
Thermal current (Ith)			5 A, GKME Series 2 A
Rated insulation (Ui)			500 V
Rated impulse withstand voltage (Uimp)			2500 V
Short circuit protection device (SCPD)			Class RK5 fuse, rated at 4.5A
Pollution degree			3
Environmental sealing			IP 66/67, GKME Series (twin connectors) IP66 per EN60529; NEMA 1, 12, 13
Operating temperature			-25 °C to 85 °C (-13 °F to 185 °F)
Shock			50 G per IEC 60068-2-27
Vibration			10 G per IEC 60068-2-6
MCTF (Mechanical life)			>1,000,000 cycles with single-sided confidence limit of 95%
MCTF (Electrical life)			32,000 cycles
SIL Capability²			SIL3 capable with HFT=1, SIL2 capable with HFT=0 with reference to IEC 61508-2:2010 Functional Safety
Proof test interval			1 year

¹All normally closed contacts are positive opening

²HFT (Hardware Fault Tolerance).

Tech Specifications

Description	Product Attribute
Manufacturer	Honeywell
Illuminated	Non-Illuminated
Contact Form	SPDT
Current Rating	1.5  A , 0.27A
Voltage Rating AC	240 VAC
Voltage Rating DC	250 VDC
Termination Style	Wired Lead
Product Type	Safty Switches
Series	GKM

   


Order Guide

Catalog Listing1	BodyStyle	Contacts	Contact Material	Electrical Connection
GKMA13	Side exit cable	1NC/1NO slow action, BBM	Silver	1 meter cable
GKMA19	Side exit cable	1NC/1NO slow action, BBM	Gold plated	1 meter cable
GKMA23	Side exit cable	1NC/1NO slow action, BBM	Silver	2 meter cable
GKMA33	Side exit cable	1NC/1NO slow action, BBM	Silver	3 meter cable
GKMA16	Side exit cable	2NC slow action	Silver	1 meter cable
GKMA36	Side exit cable	2NC slow action	Silver	3 meter cable
GKMB13	Bottom exit cable	1NC/1NO slow action, BBM	Silver	1 meter cable
GKMB19	Bottom exit cable	1NC/1NO slow action, BBM	Gold plated	1 meter cable
GKMB23	Bottom exit cable	1NC/1NO slow action, BBM	Silver	2 meter cable
GKMB33	Bottom exit cable	1NC/1NO slow action, BBM	Silver	3 meter cable
GKMB39	Bottom exit cable	1NC/1NO slow action, BBM	Gold plated	3 meter cable
GKMB16	Bottom exit cable	2NC slow action	Silver	1 meter cable
GKMB17	Bottom exit cable	2NC slow action	Gold plated	1 meter cable
GKMB36	Bottom exit cable	2NC slow action	Silver	3 meter cable
GKMB37	Bottom exit cable	2NC slow action	Gold plated	3 meter cable
GKMB56	Bottom exit cable	2NC slow action	Silver	5 meter cable
GKMC03	Side exit connector	1NC/1NO slow action, BBM	Silver	M12 Micro connector, 4-pin male
GKMC09	Side exit connector	1NC/1NO slow action, BBM	Gold plated	M12 Micro connector, 4-pin male
GKMC06	Side exit connector	2NC slow action	Silver	M12 Micro connector, 4-pin male
GKMC07	Side exit connector	2NC slow action	Gold plated	M12 Micro connector, 4-pin male
GKMD03	Bottom exit connector	1NC/1NO slow action, BBM	Silver	M12 Micro connector, 4-pin male
GKMD09	Bottom exit connector	1NC/1NO slow action, BBM	Gold plated	M12 Micro connector, 4-pin male
GKMD06	Bottom exit connector	2NC slow action	Silver	M12 Micro connector, 4-pin male
GKMD07	Bottom exit connector	2NC slow action	Gold plated	M12 Micro connector, 4-pin male
GKME03	Bottom & side exit connector	1NC/1NO slow action, BBM	Silver	Twin M12 Micro connectors, 4-pin male
GKME09	Bottom & side exit connector	1NC/1NO slow action, BBM	Gold plated	Twin M12 Micro connectors, 4-pin male
GKME06	Bottom & side exit connector	2NC slow action	Silver	Twin M12 Micro connectors, 4-pin male
GKME07	Bottom & side exit connector	2NC slow action	Gold plated	Twin M12 Micro connectors, 4-pin male

1An actuator key (ordered separately) is required for each switch. Select actuator key by reviewing product nomenclature tree and dimensional

diagrams on page 5.

 

 

 

BNSENS (Nanjing) Sensor Technology Co., Ltd. is located in Nanjing, China. It is a high-tech enterprise specializing in the development, manufacturing and trade of sensor products. The company has brought together a group of outstanding technical experts in various fields such as automation, electronics, machinery and computers. All employees of the company have college degrees or above. It adopts the world-class management and operation model and 6 sigma quality system. At present, the company's main products are pressure, liquid level, flow, current, switches, etc. The company's users are all over the country, and some products have been exported to Japan, South Korea and Southeast Asia.

Since its inception, the company has been based on the technical accumulation and management standards of American sensor giants. It is composed of senior engineers and managers who have served in multinational companies for many years, and has rapidly developed various pressure sensors, transmitters, liquid level, flow meters, pressure switches, digital meters, current sensors, proximity switches and other products. After years of unremitting efforts, it has become one of the leading suppliers in the domestic automation industry. Our pressure transmitters can achieve an accuracy of more than 3/10, 000. The products have been widely used in oil, natural gas, electricity, chemical industry, metallurgy, building materials, food, light industry, environmental protection, aerospace, tap water, municipal and other industries.

It is a sensor science and technology innovation company that masters the core technology of MEMS chips. The company has a research and development center in Minnesota, USA. The leader is Dr. Pan Hanjin, a famous scientist in the sensor industry. Dr. Pan Hanjin has been deeply involved in the sensor industry for more than 20 years and is an expert in the sensor industry.

The company has a number of ASIC chips independently developed, which are widely used in industrial, automotive, home appliance and other markets.

BNSENS (Nanjing) Sensing Technology Co., Ltd. is a strategic partner of Honeywell in China. The two parties proposed a plan of East serving East and jointly developed several sensors specifically for the Chinese market. These sensors will be widely used in intelligent manufacturing, Internet of Things, artificial intelligence, and smart home fields. These sensors include: Magnetic sensors, temperature sensors, humidity sensors, force sensors, fire water pressure sensors, equipment vibration sensors, human body status monitoring sensors, motion sensors, etc.

History of BNSENS Company:

BNSENS is a company focusing on sensors, instruments, and electronic components. We are a young company, founded in 1999, just 25 years old, and we are still growing.

1999: The company's first pressure sensor was launched, mainly for the petroleum and petrochemical industries.

2002: The company expanded its product line and launched temperature sensors

2005: Started producing high-precision pressure sensors for the test and measurement market

2006: Became an official authorized agent of Honeywell

2009: Introduced the Six Sigma management system, and the product qualification rate was greatly improved

2010: Became a supplier of Emerson

2011: We started selling SICK sensors

2014: Introduced the sensor production line from Germany, developed more industrial control sensors, and cooperated with TSMC

2015: Cooperated with Siemens in Vietnam

2017: The factory moved to Nanjing High-tech Zone

2019: Became a national high-tech enterprise in China

2023: We started selling products from Infineon and Rohm

BNSENS, The Future Starts Here.