High-temperature Basic Switch
TZ
Stable Operation at an Ambient
Temperature of 400°C
• Incorporates a ceramic insulator, cobalt-alloy spring, and
special-alloy contact, thus ensuring high contact reliability
at high ambient temperature.
• Smoothly operates at an ambient temperature of 400°C.
Ordering Information
Actuator
Model
Pin plunger
TZ-1G
Hinge lever
TZ-1GV
Short hinge roller lever
TZ-1GV22
Hinge roller lever
TZ-1GV2
Note: The levers and rollers are made of stainless steel.
Model Number Legend
TZ - 1 G
1 2 3
1. Ratings
1: 1 A, 250 VAC
2. Contact Gap
G: 0.5 mm
3. Actuator
None: Pin plunger
V:
Hinge lever
V2:
Hinge roller lever
V22: Short hinge roller lever
High-temperature Basic Switch
TZ
117
Specifications
■ Characteristics
Operating speed
0.05 mm to 1 m/s (See note 1)
Operating frequency
Mechanical
60 operations/min
Electrical
20 operations/min
Contact resistance
100 mΩ max. (initial value)
Insulation resistance
100 MΩ min. (at 500 VDC)
Dielectric strength
1,000 VAC, 50/60 Hz for 1 min between terminals of same polarity
1,500 VAC, 50/60 Hz for 1 min between current-carrying metal parts and ground and
between each terminal and non-current-carrying metal parts
Vibration resistance
Shock resistance
Malfunction
10 to 55 Hz, 1.5-mm double amplitude (See note 2)
Destruction
500 m/s2 max.
Malfunction
300 m/s2 max. (See notes 1 and 2)
Degree of protection
IP00
Degree of protection against electric shock
Class I
Ambient operating temperature
−65°C to 400°C (with no icing)
Ambient operating humidity
35% to 85%RH
Service life
Mechanical
100,000 operations min.
Electrical
50,000 operations min.
Weight
Approx. 45 to 54 g
Note: 1. The values are for pin plunger models
2. Malfunction: 1 ms max.
■ Ratings
Non-inductive load (A)
Rated voltage
(V)
Resistive load
NC
Inductive load (A)
Lamp load
NO
Inductive load
NC
NO
NC
NO
Motor load
NC
NO
125 VAC
250 VAC
1
1
0.9
0.45
0.45
0.3
1
1
1.5
0.45
0.75
0.3
8 VDC
14 VDC
30 VDC
125 VDC
1
1
1
0.4
0.9
0.9
0.9
0.05
0.45
0.45
0.45
0.05
1
1
1
0.4
1.5
1.5
1.5
0.05
1.5
1.5
1.5
0.05
Note: 1. The above values are for steady-state current.
2. Inductive load has a power factor of 0.4 min. (AC) and a time
constant of 7 ms max. (DC).
3. Lamp load has an inrush current of 10 times the steady-state current.
■ Contact Specifications
Shape
Contact
Material
Gap (standard value)
Inrush current
4. Motor load has an inrush current of 6 times the steady-state current.
5. The ratings values apply under the following test conditions:
(1) Ambient temperature: 20±2°C
(2) Ambient humidity: 65±5%RH
(3) Operating frequency: 20 operations/min
■ Structure/Contact Form
Rivet
Ceramic
pushbutton
Fixed contact b
Movable spring
Bracket
Platinum alloy
0.5 mm
NC
9 A max.
NO
4.5 A max.
COM
Ceramic terminal block
Movable contact
Fixed contact a
118
High-temperature Basic Switch
TZ
NC
NO
Dimensions
Note: Unless otherwise specified, all units are in millimeters and a tolerance of ± 0.4 mm applies to all dimensions.
Pin Plunger
23.3±0.25
TZ-1G
8.2 dia.
*
3 dia.
PT
Two, 3.56-dia. holes
Operating force
Release force
Pretravel
8.6 Over travel
Movement Differential
OP
15.2 13.2
6.1
16.8 14.1
Operating Position
18.4
18.4
25.4±0.1
49.2
6.2
OF max.
RF min.
PT max.
OT min.
MD max.
OP
500 gf
114 gf
0.4 mm
0.13 mm
0.15 mm
15.9±0.6 mm
17.4
Three, M3.5
11.4
* Ceramic pushbutton
Hinge Lever
*
TZ-1GV
7.5
23.3±0.25
R
PT
63.5
OP
13.2
8.6
16.8 14.1
18.4 18.4
25.4±0.1
49.2
Short Hinge Roller Lever
7.5
OP
17.4
18±1.2 mm
Three, M3.5
11.4
* Stainless-steel lever
23.3±0.25
9.5 dia. 4 *1
PT
26
.2
R
TZ-1GV22
Two, 3.56-dia. holes
6.2
100 gf
14 gf
3.5 mm
4.6 mm
1.3 mm
OF max.
RF min.
PT max.
OT min.
MD max.
*2
OP
13.2
8.6
16.8 14.1
Two, 3.56-dia. holes
18.4
18.4
25.4±0.1
49.2
6.2
OP
17.4
240 gf
35 gf
1.5 mm
1.9 mm
0.6 mm
OF max.
RF min.
PT max.
OT min.
MD max.
28.6±1.2 mm
Three, M3.5
11.4
*1. Stainless-steel roller
*2. Stainless-steel lever
Hinge Roller Lever
7.5
TZ-1GV2
*2
23.3±0.25
9.5 dia. 4 *1
PT
.4R
48
OP
13.2
8.6
16.8 14.1
Two, 3.56-dia. holes
18.4 18.4
25.4±0.1
49.2
6.2
OP
17.4
130 gf
20 gf
2.6 mm
3.5 mm
1 mm
OF max.
RF min.
PT max.
OT min.
MD max.
28.6±1.2 mm
Three, M3.5
11.4
*1. Stainless-steel roller
*2. Stainless-steel lever
■ Mounting
• Be sure to turn OFF the power supply to the Switch before mounting, dismounting, wiring, or working on the Switch for maintenance.
• Use M3.5 stainless-steel mounting screws with plane washers or
spring washers to securely mount the Switch. Tighten the screws to
a torque of 0.69 to 0.98 N·m.
■ Mounting Holes
Two, 3.56-dia. mounting holes or
M3.5 screw holes
25.4±0.1
High-temperature Basic Switch
TZ
119
Safety Precautions
Be sure to read the precautions and information common to all Snap Action and Detection Switches, contained in the Technical User’s Guide,
“Snap Action Switches, Technical Information” for correct use.
Precautions for Safe Use
Handling
The Switch has a ceramic casing. Do not drop the Switch from a
height of 30 cm or more. Doing so will break the casing.
• Connect nickel-plated solderless terminals to the TZ. Each terminal
must be secured on the TZ with M3.5 nut.
• Make sure that the ceramic case is free of metal powder or other
impurities.
• Do not use the switch in locations subject to hot water (greater than
60°C) or in water vapor.
• Do not use the switch outside the specified temperature and
atmospheric conditions.
The permissible ambient temperature depends on the model.
(Refer to the specifications in this catalog.) Sudden thermal
changes may cause thermal shock to distort the switch and result
in faults.
Incorrect
Correct
Operation
• Do not modify the Actuator and change the operating position.
• Make sure that the switching speed is not extremely slow or do not
use the Switch so that the pushbutton will be set to a position
between the FP and OP.
• Make sure that the pin plunger and the switching stroke are on the
same vertical line.
• Make sure that the switching frequency or speed is within the
specified range.
1. If the switching speed is extremely slow, the contact may not be
switched smoothly, which may result in a contact failure or contact
welding.
2. If the switching speed is extremely fast, switching shock may
damage the Switch soon. If the switching frequency is too high,
the contact may not catch up with the speed.
The rated permissible switching speed and frequency indicate the
switching reliability of the Switch.
The life of a Switch is determined at the specified switching
speed. The life varies with the switching speed and frequency
even when they are within the permissible ranges. In order to
determine the life of a Switch model to be applied to a particular
use, it is best to conduct an appropriate durability test on some
samples of the model under actual conditions.
• Make sure that the actuator travel does not exceed the permissible
OT position. The operating stroke must be set to 70% to 100% of
the rated OT.
Precautions for Correct Use
Mounting Location
• Do not use the switch alone in atmospheres such as flammable or
explosive gases. Arcing and heat generation associated with
switching may cause fires or explosions.
• Switches are generally not constructed with resistance against
water. Use a protective cover to prevent direct spraying if the switch
is used in locations subject to splashing or spurting oil or water,
dust adhering.
Incorrect
Terminal box
Correct
Terminal box
• Install the switch in a location that is not directly subject to debris
and dust from cutting. The actuator and the switch body must be
protected from accumulated cutting debris and dirt.
Incorrect
120
Correct
High-temperature Basic Switch
TZ
Separate the
installation
location from
heat sources.
• Mount a cover if the switch is to be installed in a location where
worker inattention could result in incorrect operation or accidents.
Incorrect
Correct
(preventing malfunctions)
• Subjecting the switch to continuous vibration or shock may result in
contact failure or faulty operation due to abrasion powder and in
reduced durability. Excessive vibration or shock will cause the
contacts to operate malfunction or become damaged. Mount the
switch in a location that is not subject to vibration or shock and in a
direction that does not subject the switch to resonance.
• If silver contacts are used with relatively low frequency for a long
time or are used with microloads, the sulfide coating produced on
the contact surface will not be broken down and contact faults will
result. Use a microload switch that uses gold contacts.
• Do not use the switch in atmospheres with high humidity or heat or
in harmful gases, such as sulfide gas (H2S, SO2), ammonia gas
(NH3), nitric acid gas (HNO3), or chlorine gas (Cl2). Doing so may
impair functionality, such as with damage due to contacting faults or
corrosion.
• The switch includes contacts. If the switch is used in an atmosphere
with silicon gas, arc energy may cause silicon oxide (SiO2) to
accumulate on the contacts and result in contact failure. If there is
silicon oil, silicon filling, silicon wiring, or other silicon products in
the vicinity of the switch, use a contact protection circuit to limit
arcing and remove the source of the silicon gas.
Omron Electronic Components, LLC
Terms and Conditions of Sales
I. GENERAL
1. Definitions: The words used herein are defined as follows.
(a) Terms:
These terms and conditions
(b) Seller:
Omron Electronic Components LLC and its subsidiaries
(c) Buyer:
The buyer of Products, including any end user in section III through VI
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OMRON PRODUCT IS FIT AND SUFFICIENT FOR USE IN A MOTORIZED VEHICLE
APPLICATION. BUYER SHALL BE SOLELY RESPONSIBLE FOR DETERMINING
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COMPONENTS, (B) CIRCUITS, (C) SYSTEM ASSEMBLIES, (D) END PRODUCT, (E)
SYSTEM, (F) MATERIALS OR SUBSTANCES OR (G) OPERATING ENVIRONMENT.
Buyer acknowledges that it alone has determined that the Products will meet their
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2. Use with Attention: The followings are some examples of applications for which
particular attention must be given. This is not intended to be an exhaustive list of all
possible use of any Product, nor to imply that any use listed may be suitable for any
Product:
(a) Outdoor use, use involving potential chemical contamination or electrical
interference.
(b) Use in consumer Products or any use in significant quantities.
(c) Energy control systems, combustion systems, railroad systems, aviation systems,
medical equipment, amusement machines, vehicles, safety equipment, and
installations subject to separate industry or government regulations.
(d) Systems, machines, and equipment that could present a risk to life or property.
3. Prohibited Use: NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING
SERIOUS RISK TO LIFE OR PROPERTY WITHOUT ENSURING THAT THE SYSTEM
AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE
PRODUCT IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE
WITHIN THE OVERALL EQUIPMENT OR SYSTEM.
4. Motorized Vehicle Application: USE OF ANY PRODUCT/S FOR A MOTORIZED
VEHICLE APPLICATION MUST BE EXPRESSLY STATED IN THE SPECIFICATION BY
SELLER.
5. Programmable Products: Seller shall not be responsible for the Buyer's programming of
a programmable Product.
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and does not constitute a warranty. It may represent the result of Seller's test conditions,
and the users must correlate it to actual application requirements.
4. Change In Specifications: Product specifications and descriptions may be changed at
any time based on improvements or other reasons. It is Seller’s practice to change part
numbers when published ratings or features are changed, or when significant
engineering changes are made. However, some specifications of the Product may be
changed without any notice.
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has been carefully checked and is believed to be accurate; however, no responsibility is
assumed for clerical, typographical or proofreading errors or omissions.
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5. Severability: If any provision hereof is rendered ineffective or invalid, such provision shall
not invalidate any other provision.
High-temperature Basic Switch
TZ
Certain Precautions on Specifications and Use
1. Suitability for Use. Seller shall not be responsible for conformity with any standards, codes or regulations which apply to the combination of the Product in
Buyer's application or use of the Product. At Buyer's request, Seller will provide applicable third party certification documents identifying ratings and limitations of use which apply to the Product. This information by itself is not
sufficient for a complete determination of the suitability of the Product in combination with the end product, machine, system, or other application or use.
Buyer shall be solely responsible for determining appropriateness of the particular Product with respect to Buyer's application, product or system. Buyer
shall take application responsibility in all cases but the following is a nonexhaustive list of applications for which particular attention must be given:
(i) Outdoor use, uses involving potential chemical contamination or electrical
interference, or conditions or uses not described in this document.
(ii) Energy control systems, combustion systems, railroad systems, aviation
systems, medical equipment, amusement machines, vehicles, safety
equipment, and installations subject to separate industry or government
regulations.
(iii) Use in consumer products or any use in significant quantities.
(iv) Systems, machines and equipment that could present a risk to life or
property. Please know and observe all prohibitions of use applicable to this
product.
NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS
RISK TO LIFE OR PROPERTY WITHOUT ENSURING THAT THE SYSTEM
AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT
THE OMRON PRODUCT IS PROPERLY RATED AND INSTALLED FOR THE
INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.
2. Programmable Products. Seller shall not be responsible for the user's programming of a programmable product, or any consequence thereof.
3. Performance Data. Performance data given in this publication is provided as
a guide for the user in determining suitability and does not constitute a warranty. It may represent the result of Seller's test conditions, and the users must
correlate it to actual application requirements. Actual performance is subject to
Seller's Warranty and Limitations of Liability.
4. Change in Specifications. Product specifications and accessories may be
changed at any time based on improvements and other reasons. It is our practice to change part numbers when published ratings or features are changed,
or when significant construction changes are made. However, some specifications of the Product may be changed without any notice. When in doubt, special part numbers may be assigned to fix or establish key specifications for
your application. Please consult with your Seller representative at any time to
confirm actual specifications of purchased Product.
5. Errors and Omissions. The information in this publication has been carefully
checked and is believed to be accurate; however, no responsibility is assumed
for clerical, typographical or proofreading errors, or omissions.
6. RoHS Compliance. Where indicated, our products currently comply, to the
best of our knowledge as of the date of this publication, with the requirements
of the European Union's Directive on the Restriction of certain Hazardous
Substances ("RoHS"), although the requirements of RoHS do not take effect
until July 2006. These requirements may be subject to change. Please consult
our website for current information.
Complete “Terms and Conditions of Sale” for product purchase and use are on Omron’s website
at http://www.components.omron.com – under the “About Us” tab, in the Legal Matters section.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
OMRON ON-LINE
OMRON ELECTRONIC
COMPONENTS LLC
Global - http://www.omron.com
USA - http://www.components.omron.com
55 E. Commerce Drive, Suite B
Schaumburg, IL 60173
847-882-2288
Cat. No. X303-E-1
11/09
High-temperature Basic Switch
Specifications subject to change without notice
TZ
Printed in USA