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MB2181SS4W03 Equivalent & Substitute Parts
Part Overview
The MB2181SS4W03 is a pushbutton switch manufactured by NKK Switches. This component is classified as obsolete, making it necessary to identify active equivalent models for continued system support and new production applications. Substitute parts must maintain functional compatibility based on electrical and mechanical specifications.
Substiute Parts
Key Parameters
| Parameter | MB2181SS4W03 |
|---|---|
| Manufacturer | NKK Switches |
| Description | Pushbutton Switch |
| Product Status | Obsolete |
| Inventory Status | 701 Pcs New Original In Stock |
Substitute Part Grouping Explanation
Substitution for the MB2181SS4W03 is based on the following criteria derived from the provided parameters:
- Manufacturer alignment: NKK Switches product family
- Component category: Pushbutton switch
- Functional classification: Switch type
- Product status transition: From obsolete to active production status
The MBN45SS4W03 qualifies as a manufacturer-recommended substitute based on these parameters. This part maintains the same manufacturer source and component category while offering active product status for ongoing availability.
Parameter Comparison
| Parameter | MB2181SS4W03 | MBN45SS4W03 |
|---|---|---|
| Manufacturer | NKK Switches | NKK Switches |
| Description | Pushbutton Switch | Pushbutton Switch |
| Product Status | Obsolete | Active |
| Series | - | MB2000 |
| Mounting Type | - | Panel Mount, Rear |
| Type | - | Standard |
| Circuit | - | 4PDT |
| Switch Function | - | On-Mom |
| Current Rating (AC) | - | 6A |
| Current Rating (DC) | - | 3A |
| Voltage Rating - AC | - | 125 V |
| Voltage Rating - DC | - | 30 V |
| Actuator Type | - | Plunger for Cap |
| Termination Style | - | PC Pin |
| Panel Cutout Dimensions | - | Circular - 6.50mm Dia |
| Inventory Status | 701 Pcs New Original In Stock | 973 Pcs New Original In Stock |
Engineering Selection Recommendations
The MBN45SS4W03 is the manufacturer-recommended substitute for the obsolete MB2181SS4W03. Selection of this part is based on:
- Active product status ensuring long-term availability and supply chain continuity
- Manufacturer recommendation from NKK Switches
- Consistent component category classification
- Adequate inventory levels for production requirements
Frequently Asked Questions (FAQ)
Q: Why is the MB2181SS4W03 being phased out? A: The MB2181SS4W03 has reached obsolete status. The MBN45SS4W03 is the active equivalent from the same manufacturer.
Q: What are the key differences between MB2181SS4W03 and MBN45SS4W03? A: The substitute part provides detailed electrical specifications including 4PDT circuit configuration, 6A AC / 3A DC current ratings, 125V AC / 30V DC voltage ratings, and panel mount rear configuration. The original part number lacks these detailed specifications in the available data.
Q: Is the MBN45SS4W03 a direct replacement? A: The MBN45SS4W03 is the manufacturer-recommended substitute. Compatibility must be verified against your specific application requirements, particularly mounting configuration and electrical load specifications.
Q: What is the panel cutout dimension for the substitute part? A: The MBN45SS4W03 requires a circular panel cutout of 6.50mm diameter.
Q: Are both parts available in stock? A: Yes. The MB2181SS4W03 has 701 pieces in stock, and the MBN45SS4W03 has 973 pieces in stock.
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