Stainless Steel Roller Lever Actuator
The OMRON D4C-1620 features a roller lever actuator with a 17.5 mm diameter sintered stainless steel roller and R38 lever geometry, designed for mechanical position detection in compatible industrial equipment.
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Omron
OMRON D4C-1620 Miniature Limit Switch Compact Industrial Position Switch
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PRODUCT DOCUMENTATION
Product Information
Technical specifications, features, applications and purchasing information.
Technical Specifications
| Brand | OMRON |
| Model Number | D4C-1620 |
| Product Category | Roller Lever Limit Switch |
| Product Series | D4C Enclosed Switch |
| Switch Construction | Compact, Sealed Mechanical Limit Switch |
| Actuator Type | Roller Lever |
| Roller Dimensions | 17.5 mm Diameter × 7 mm Width |
| Roller Material | Sintered Stainless Steel |
| Lever Radius | R38 |
| Contact Configuration | SPDT, 1 Changeover Contact |
| 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 Rating | 3 A at 125 VAC; 2 A at 250 VAC |
| NC Lamp Load Rating | 1.5 A at 125 VAC; 1 A at 250 VAC |
| NO Lamp Load Rating | 0.7 A at 125 VAC; 0.5 A at 250 VAC |
| NC Motor Load Rating | 2.5 A at 125 VAC; 1.5 A at 250 VAC |
| NO Motor Load Rating | 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 | Pre-Wired Cable |
| Cable Length | 3 m |
| Cable Type | SJT(O), UL/CSA-Approved |
| 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 |
| Operating Force | 5.69 N Maximum |
| Release Force | 1.47 N Minimum |
| Pre-Travel | 25° Maximum |
| Movement Differential | 3° Maximum |
| Over-Travel | 40° Minimum |
| Permissible Roller Lever Operating Speed | 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, Protective Earth Connection Required |
| 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, Under Specified Conditions |
| Shock Resistance, Destruction | 1000 m/s² Maximum |
| Shock Resistance, Malfunction | 500 m/s² Maximum |
| Operation Indicator | Not Provided on Standard D4C-1620 |
| Related 5 m Cable Model | D4C-1720 |
| Related Oil-Resistant Cable Model | D4C-1220, Different Cable Specification |
| Manufacturer Technical Reference | OMRON D4C-1620 Official Product Specifications and D4C Enclosed Switch Datasheet |
Key Features
5 A at 250 VAC Switching Rating
The switch provides a standard-load SPDT changeover contact rated for 5 A at 250 VAC or 4 A at 30 VDC with resistive loads. Permissible currents for inductive, lamp and motor loads differ and must be checked separately.
Factory-Installed 3 m Cable
A 3 m SJT(O) cable provides four conductors, including protective earth, for connection to the control circuit. This cable configuration distinguishes the D4C-1620 from other D4C versions with different cable lengths and jacket specifications.
IP67 Sealed Enclosure
The compact D4C construction meets the IP67 enclosure protection rating under specified test conditions. Proper installation and protection of the cable termination are necessary to maintain the intended environmental resistance.
Mechanical Position Switching
The spring-return roller lever actuates the internal changeover contact when an external moving component applies the required operating force. The manufacturer specifies a maximum operating force of 5.69 N and minimum release force of 1.47 N.
Industrial Mechanical Durability
OMRON specifies a minimum mechanical durability of 10 million operations and a minimum electrical durability of 200,000 operations at the stated reference load. Actual operating life depends on switching frequency, mechanical alignment and electrical loading.
Applications
- Industrial machine end-position detection
- Conveyor equipment travel limit monitoring
- Automated assembly machine positioning
- Packaging machinery mechanical switching
- Material handling equipment position feedback
- Machine tool movement limit detection
- Industrial control relay input circuits
- Maintenance of compatible OMRON D4C limit switches
Purchase Information
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.
Frequently Asked Questions
What is the OMRON D4C-1620?
It is a compact enclosed mechanical limit switch with a stainless steel roller lever actuator, one SPDT contact, a 3 m SJT(O) cable and an IP67 enclosure rating.
What type of actuator does the D4C-1620 use?
It uses a roller lever actuator with a 17.5 mm diameter, 7 mm wide sintered stainless steel roller and an R38 lever geometry.
What is the maximum contact current?
The switch is rated for a 5 A resistive load at 250 VAC and a 4 A resistive load at 30 VDC. Other load types have different current ratings.
Does the switch have normally open and normally closed contacts?
Yes. The D4C-1620 has a single SPDT changeover contact, providing common, normally open and normally closed switching paths.
Does the switch require a separate power supply?
No separate electronic power supply is required for the mechanical switch itself. Its contacts operate within an externally supplied control circuit and must remain within the specified electrical ratings.
How long is the connection cable?
The D4C-1620 has a factory-installed 3 m SJT(O) cable with four conductors, including a protective earth wire.
Is the D4C-1620 waterproof?
OMRON specifies IP67 enclosure protection under defined test conditions. This rating does not imply suitability for all chemicals, continuous immersion or unprotected cable terminations.
What is the operating temperature range?
The specified ambient operating temperature is -10 to +70°C, without icing.
What force is required to operate the lever?
The maximum specified operating force is 5.69 N, while the minimum release force is 1.47 N. The actuator must be installed within its permissible travel and force limits.
What are the mechanical travel specifications?
The pre-travel is 25° maximum, movement differential is 3° maximum and over-travel is 40° minimum under the manufacturer's reference conditions.
What is the difference between D4C-1620 and D4C-1720?
Both models use the standard-load roller lever configuration and SJT(O) cable type. The D4C-1620 features a 3 m cable, while the D4C-1720 features a 5 m cable.
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