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Technical specifications, features, applications and purchasing information.
| Brand | Omron |
| Model Number | D4C-1620 |
| Product Category | Roller Lever Limit Switch |
| Product Series | D4C Enclosed Switches |
| Switch Construction | Compact Enclosed Mechanical Limit Switch |
| Actuator Type | Roller Lever |
| Roller Diameter | 17.5 mm |
| Roller Width | 7 mm |
| Roller Material | Sintered Stainless Steel |
| Lever Radius | R38 |
| Contact Configuration | SPDT, 1 Changeover Contact |
| Electrical Load Classification | Standard Load |
| Rated Resistive Load, AC | 5 A at 125 VAC or 250 VAC |
| Rated Resistive Load, DC | 4 A at 30 VDC |
| AC Inductive Load | 3 A at 125 VAC; 2 A at 250 VAC |
| AC Lamp Load, NC | 1.5 A at 125 VAC; 1 A at 250 VAC |
| AC Lamp Load, NO | 0.7 A at 125 VAC; 0.5 A at 250 VAC |
| AC Motor Load, NC | 2.5 A at 125 VAC; 1.5 A at 250 VAC |
| AC Motor Load, NO | 1.3 A at 125 VAC; 0.8 A at 250 VAC |
| Maximum Inrush Current, NC | 20 A |
| Maximum Inrush Current, NO | 10 A |
| Rated Frequency | 50/60 Hz |
| Electrical Connection | Factory Pre-Wired Cable |
| Cable Type | SJT(O), UL/CSA Approved |
| Cable Length | 3 m |
| Number of Cable Cores | 4, Including Protective Earth |
| Nominal Conductor Cross-Section | 0.83 mm² |
| Cable Outside Diameter | 8.6 mm |
| Protective Earth Connection | Provided |
| Maximum Operating Force | 5.69 N |
| Minimum Release Force | 1.47 N |
| Maximum Pre-Travel | 25° |
| Maximum Movement Differential | 3° |
| Minimum Over-Travel | 40° |
| Permissible Operating Speed, Roller Lever | 1 mm/s to 1 m/s |
| Maximum Mechanical Operating Frequency | 120 Operations per Minute |
| Maximum Electrical Operating Frequency | 30 Operations per Minute |
| Mechanical Durability | 10 Million Operations Minimum |
| Electrical Durability | 200,000 Operations Minimum at 5 A, 125 VAC Resistive Load |
| Initial Contact Resistance | 300 mΩ Maximum |
| Insulation Resistance | 100 MΩ Minimum at 500 VDC |
| Dielectric Strength, Between Contacts | 1000 VAC, 50/60 Hz for 1 Minute |
| Dielectric Strength, Live Parts to Ground | 1500 VAC, 50/60 Hz for 1 Minute |
| Impulse Withstand Voltage | 2.5 kV |
| Enclosure Protection Rating | IP67 |
| Electric Shock Protection Class | Class I, With Earth Wire |
| Ambient Operating Temperature | -10 to +70°C, Without Icing |
| Ambient Operating Humidity | 35% to 95% RH |
| Vibration Resistance | 10 to 55 Hz, 1.5 mm Double Amplitude |
| Shock Resistance, Destruction | 1000 m/s² Maximum |
| Shock Resistance, Malfunction | 500 m/s² Maximum |
| Related 5 m Cable Model | D4C-1720 |
| Related High-Sensitivity Roller Lever Model | D4C-1624 |
| Related Sealed Roller Plunger Model | D4C-1632 |
| Manufacturer Technical Reference | OMRON D4C-1620 Official Product Specifications, Updated September 4, 2025 |
The Omron D4C-1620 has a roller lever with a 17.5 mm diameter and 7 mm wide sintered stainless steel roller. Its R38 lever geometry is designed for mechanical position detection in compatible industrial machinery.
The standard-load SPDT contact supports a resistive load of 5 A at 250 VAC or 4 A at 30 VDC. Lower ratings apply to certain inductive, lamp and motor loads, so the intended electrical load must be checked before installation.
A factory-installed 3 m SJT(O) cable provides four conductors including a protective earth wire. OMRON specifies a nominal conductor cross-section of 0.83 mm² and an outside cable diameter of 8.6 mm.
The compact D4C housing has an IP67 enclosure protection rating under specified test conditions. Installation, cable termination and environmental compatibility must follow the manufacturer's requirements.
The roller lever has a maximum operating force of 5.69 N, a minimum release force of 1.47 N, a maximum pre-travel of 25° and a minimum over-travel of 40°. These values support appropriate actuator positioning and machine travel adjustment.
OMRON specifies at least 10 million mechanical operations and 200,000 electrical operations under the stated reference load conditions. Actual service life depends on mechanical alignment, operating frequency and switched load characteristics.
We support online purchase of the Omron D4C-1620 Roller Lever Limit Switch. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.
What is the Omron D4C-1620?
It is a compact enclosed mechanical limit switch with a stainless steel roller lever, SPDT contact, 3 m SJT(O) cable and IP67 enclosure protection.
What actuator type does the D4C-1620 use?
It uses a roller lever with a sintered stainless steel roller measuring 17.5 mm in diameter and 7 mm in width. The lever has an R38 geometry.
What is the electrical contact rating?
The standard-load contact is rated for 5 A at 250 VAC or 4 A at 30 VDC with resistive loads. Ratings for inductive, lamp and motor loads are different.
Does it have normally open and normally closed contacts?
Yes. The switch provides one SPDT changeover contact with common, normally open and normally closed switching paths.
Does the D4C-1620 require a separate power supply?
No electronic supply is required to operate its mechanical switching mechanism. The switch contacts are connected to an external control circuit within their specified electrical ratings.
How long is the connection cable?
The factory-installed SJT(O) cable is 3 m long and has four conductors, including a protective earth wire.
Is the D4C-1620 waterproof?
The enclosure is rated IP67 under defined conditions. This rating does not establish suitability for continuous immersion, every chemical environment or unprotected cable terminations.
What is the operating temperature range?
The manufacturer specifies an ambient operating temperature of -10 to +70°C without icing.
What force is required to operate the lever?
The maximum specified operating force is 5.69 N, and the minimum release force is 1.47 N.
What are the mechanical travel specifications?
The maximum pre-travel is 25°, the maximum movement differential is 3° and the minimum over-travel is 40°. The machine actuator should be designed to operate within the switch's permitted movement range.
How many operations can the switch withstand?
OMRON specifies a minimum mechanical durability of 10 million operations and a minimum electrical durability of 200,000 operations at the stated 5 A, 125 VAC reference load.
What is the difference between D4C-1620 and D4C-1720?
Both use a standard-load roller lever actuator with an SJT(O) cable, but the D4C-1620 features a 3 m cable length, whereas the D4C-1720 is equipped with a 5 m cable.
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Available in stock (200)
| Brand | Omron |
| Model Number | D4C-1620 |
| Product Category | Roller Lever Limit Switch |
| Product Series | D4C Enclosed Switches |
| Switch Construction | Compact Enclosed Mechanical Limit Switch |
| Actuator Type | Roller Lever |
| Roller Diameter | 17.5 mm |
| Roller Width | 7 mm |
| Roller Material | Sintered Stainless Steel |
| Lever Radius | R38 |
| Contact Configuration | SPDT, 1 Changeover Contact |
| Electrical Load Classification | Standard Load |
| Rated Resistive Load, AC | 5 A at 125 VAC or 250 VAC |
| Rated Resistive Load, DC | 4 A at 30 VDC |
| AC Inductive Load | 3 A at 125 VAC; 2 A at 250 VAC |
| AC Lamp Load, NC | 1.5 A at 125 VAC; 1 A at 250 VAC |
| AC Lamp Load, NO | 0.7 A at 125 VAC; 0.5 A at 250 VAC |
| AC Motor Load, NC | 2.5 A at 125 VAC; 1.5 A at 250 VAC |
| AC Motor Load, NO | 1.3 A at 125 VAC; 0.8 A at 250 VAC |
| Maximum Inrush Current, NC | 20 A |
| Maximum Inrush Current, NO | 10 A |
| Rated Frequency | 50/60 Hz |
| Electrical Connection | Factory Pre-Wired Cable |
| Cable Type | SJT(O), UL/CSA Approved |
| Cable Length | 3 m |
| Number of Cable Cores | 4, Including Protective Earth |
| Nominal Conductor Cross-Section | 0.83 mm² |
| Cable Outside Diameter | 8.6 mm |
| Protective Earth Connection | Provided |
| Maximum Operating Force | 5.69 N |
| Minimum Release Force | 1.47 N |
| Maximum Pre-Travel | 25° |
| Maximum Movement Differential | 3° |
| Minimum Over-Travel | 40° |
| Permissible Operating Speed, Roller Lever | 1 mm/s to 1 m/s |
| Maximum Mechanical Operating Frequency | 120 Operations per Minute |
| Maximum Electrical Operating Frequency | 30 Operations per Minute |
| Mechanical Durability | 10 Million Operations Minimum |
| Electrical Durability | 200,000 Operations Minimum at 5 A, 125 VAC Resistive Load |
| Initial Contact Resistance | 300 mΩ Maximum |
| Insulation Resistance | 100 MΩ Minimum at 500 VDC |
| Dielectric Strength, Between Contacts | 1000 VAC, 50/60 Hz for 1 Minute |
| Dielectric Strength, Live Parts to Ground | 1500 VAC, 50/60 Hz for 1 Minute |
| Impulse Withstand Voltage | 2.5 kV |
| Enclosure Protection Rating | IP67 |
| Electric Shock Protection Class | Class I, With Earth Wire |
| Ambient Operating Temperature | -10 to +70°C, Without Icing |
| Ambient Operating Humidity | 35% to 95% RH |
| Vibration Resistance | 10 to 55 Hz, 1.5 mm Double Amplitude |
| Shock Resistance, Destruction | 1000 m/s² Maximum |
| Shock Resistance, Malfunction | 500 m/s² Maximum |
| Related 5 m Cable Model | D4C-1720 |
| Related High-Sensitivity Roller Lever Model | D4C-1624 |
| Related Sealed Roller Plunger Model | D4C-1632 |
| Manufacturer Technical Reference | OMRON D4C-1620 Official Product Specifications, Updated September 4, 2025 |
The Omron D4C-1620 has a roller lever with a 17.5 mm diameter and 7 mm wide sintered stainless steel roller. Its R38 lever geometry is designed for mechanical position detection in compatible industrial machinery.
The standard-load SPDT contact supports a resistive load of 5 A at 250 VAC or 4 A at 30 VDC. Lower ratings apply to certain inductive, lamp and motor loads, so the intended electrical load must be checked before installation.
A factory-installed 3 m SJT(O) cable provides four conductors including a protective earth wire. OMRON specifies a nominal conductor cross-section of 0.83 mm² and an outside cable diameter of 8.6 mm.
The compact D4C housing has an IP67 enclosure protection rating under specified test conditions. Installation, cable termination and environmental compatibility must follow the manufacturer's requirements.
The roller lever has a maximum operating force of 5.69 N, a minimum release force of 1.47 N, a maximum pre-travel of 25° and a minimum over-travel of 40°. These values support appropriate actuator positioning and machine travel adjustment.
OMRON specifies at least 10 million mechanical operations and 200,000 electrical operations under the stated reference load conditions. Actual service life depends on mechanical alignment, operating frequency and switched load characteristics.
We support online purchase of the Omron D4C-1620 Roller Lever Limit Switch. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.
What is the Omron D4C-1620?
It is a compact enclosed mechanical limit switch with a stainless steel roller lever, SPDT contact, 3 m SJT(O) cable and IP67 enclosure protection.
What actuator type does the D4C-1620 use?
It uses a roller lever with a sintered stainless steel roller measuring 17.5 mm in diameter and 7 mm in width. The lever has an R38 geometry.
What is the electrical contact rating?
The standard-load contact is rated for 5 A at 250 VAC or 4 A at 30 VDC with resistive loads. Ratings for inductive, lamp and motor loads are different.
Does it have normally open and normally closed contacts?
Yes. The switch provides one SPDT changeover contact with common, normally open and normally closed switching paths.
Does the D4C-1620 require a separate power supply?
No electronic supply is required to operate its mechanical switching mechanism. The switch contacts are connected to an external control circuit within their specified electrical ratings.
How long is the connection cable?
The factory-installed SJT(O) cable is 3 m long and has four conductors, including a protective earth wire.
Is the D4C-1620 waterproof?
The enclosure is rated IP67 under defined conditions. This rating does not establish suitability for continuous immersion, every chemical environment or unprotected cable terminations.
What is the operating temperature range?
The manufacturer specifies an ambient operating temperature of -10 to +70°C without icing.
What force is required to operate the lever?
The maximum specified operating force is 5.69 N, and the minimum release force is 1.47 N.
What are the mechanical travel specifications?
The maximum pre-travel is 25°, the maximum movement differential is 3° and the minimum over-travel is 40°. The machine actuator should be designed to operate within the switch's permitted movement range.
How many operations can the switch withstand?
OMRON specifies a minimum mechanical durability of 10 million operations and a minimum electrical durability of 200,000 operations at the stated 5 A, 125 VAC reference load.
What is the difference between D4C-1620 and D4C-1720?
Both use a standard-load roller lever actuator with an SJT(O) cable, but the D4C-1620 features a 3 m cable length, whereas the D4C-1720 is equipped with a 5 m cable.
