![[OMRON] — D4A-[]N General-purpose Limit Switch (DPDT, G1/2+NPT, No/Neon/LED indicator)](https://prosourcemro.com/wp-content/uploads/2026/05/001-471-1024x768.png)
Limit Switches
Omron
[OMRON] — D4A-[]N General-purpose Limit Switch (DPDT, G1/2+NPT, No/Neon/LED indicator)
Family ID: OMRON-D4A-DPDT
The Limit Switch with Better Seal, Shock Resistance, and Strength
40 product codes available in this family
Product Codes & Specifications
| Product Code | Description | Brand | Spec | ||
|---|---|---|---|---|---|
| D4A-4501N | D4A DPDT Roller lever (Standard) G1/2 No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Roller lever (Standard) | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-2501N | D4A DPDT Roller lever (Standard) NPT No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Roller lever (Standard) | Circuit: DPDT double-break | Conduit: 1/2-14NPT | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-4L01N | D4A DPDT Roller lever (Standard) G1/2 Neon | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Roller lever (Standard) | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: Neon lamp (AC) | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-4P01N | D4A DPDT Roller lever (Standard) G1/2 LED | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Roller lever (Standard) | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: LED (DC) | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-4502N | D4A DPDT Roller lever (High-sensitivity) G1/2 No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Roller lever (High-sensitivity) | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-2502N | D4A DPDT Roller lever (High-sensitivity) NPT No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Roller lever (High-sensitivity) | Circuit: DPDT double-break | Conduit: 1/2-14NPT | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-4503N | D4A DPDT Roller lever (Low-torque) G1/2 No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Roller lever (Low-torque) | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-2503N | D4A DPDT Roller lever (Low-torque) NPT No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Roller lever (Low-torque) | Circuit: DPDT double-break | Conduit: 1/2-14NPT | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-4504N | D4A DPDT Roller lever (HS + Low-torque) G1/2 No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Roller lever (HS + Low-torque) | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-2504N | D4A DPDT Roller lever (HS + Low-torque) NPT No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Roller lever (HS + Low-torque) | Circuit: DPDT double-break | Conduit: 1/2-14NPT | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-4505N | D4A DPDT Roller lever (Maintained) G1/2 No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Roller lever (Maintained) | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-2505N | D4A DPDT Roller lever (Maintained) NPT No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Roller lever (Maintained) | Circuit: DPDT double-break | Conduit: 1/2-14NPT | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-4717N | D4A DPDT Roller lever (Sequential operation) G1/2 No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Roller lever (Sequential operation) | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-2717N | D4A DPDT Roller lever (Sequential operation) NPT No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Roller lever (Sequential operation) | Circuit: DPDT double-break | Conduit: 1/2-14NPT | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-4918N | D4A DPDT Roller lever (Center neutral operation) G1/2 No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Roller lever (Center neutral operation) | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-2918N | D4A DPDT Roller lever (Center neutral operation) NPT No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Roller lever (Center neutral operation) | Circuit: DPDT double-break | Conduit: 1/2-14NPT | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-4506N | D4A DPDT Side plunger (Standard) G1/2 No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Side plunger (Standard) | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-2506N | D4A DPDT Side plunger (Standard) NPT No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Side plunger (Standard) | Circuit: DPDT double-break | Conduit: 1/2-14NPT | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-4507-VN | D4A DPDT Vertical roller G1/2 No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Vertical roller | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-2507-VN | D4A DPDT Vertical roller NPT No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Vertical roller | Circuit: DPDT double-break | Conduit: 1/2-14NPT | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-4507-HN | D4A DPDT Horizontal roller G1/2 No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Horizontal roller | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-2507-HN | D4A DPDT Horizontal roller NPT No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Horizontal roller | Circuit: DPDT double-break | Conduit: 1/2-14NPT | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-4508N | D4A DPDT Adjustable roller lever G1/2 No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Adjustable roller lever | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-2508N | D4A DPDT Adjustable roller lever NPT No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Adjustable roller lever | Circuit: DPDT double-break | Conduit: 1/2-14NPT | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-4509N | D4A DPDT Top plunger (Standard) G1/2 No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Top plunger (Standard) | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-2509N | D4A DPDT Top plunger (Standard) NPT No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Top plunger (Standard) | Circuit: DPDT double-break | Conduit: 1/2-14NPT | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-4510N | D4A DPDT Top plunger (Roller) G1/2 No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Top plunger (Roller) | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-2510N | D4A DPDT Top plunger (Roller) NPT No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Top plunger (Roller) | Circuit: DPDT double-break | Conduit: 1/2-14NPT | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-4L10N | D4A DPDT Top plunger (Roller) G1/2 Neon | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Top plunger (Roller) | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: Neon lamp (AC) | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-4P10N | D4A DPDT Top plunger (Roller) G1/2 LED | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Top plunger (Roller) | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: LED (DC) | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-4511N | D4A DPDT Top plunger (Adjustable) G1/2 No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Top plunger (Adjustable) | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-2511N | D4A DPDT Top plunger (Adjustable) NPT No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Top plunger (Adjustable) | Circuit: DPDT double-break | Conduit: 1/2-14NPT | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-4512N | D4A DPDT Flexible rod (Spring wire) G1/2 No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Flexible rod (Spring wire) | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-2512N | D4A DPDT Flexible rod (Spring wire) NPT No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Flexible rod (Spring wire) | Circuit: DPDT double-break | Conduit: 1/2-14NPT | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-4514N | D4A DPDT Flexible rod (Plastic rod) G1/2 No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Flexible rod (Plastic rod) | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-2514N | D4A DPDT Flexible rod (Plastic rod) NPT No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Flexible rod (Plastic rod) | Circuit: DPDT double-break | Conduit: 1/2-14NPT | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-4515N | D4A DPDT Cat whisker G1/2 No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Cat whisker | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-2515N | D4A DPDT Cat whisker NPT No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Cat whisker | Circuit: DPDT double-break | Conduit: 1/2-14NPT | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-4516N | D4A DPDT Coil spring G1/2 No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Coil spring | Circuit: DPDT double-break | Conduit: G1/2 | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) | ||
| D4A-2516N | D4A DPDT Coil spring NPT No-ind | OMRON | Type: General-purpose Limit Switch (Set) | Actuator: Coil spring | Circuit: DPDT double-break | Conduit: 1/2-14NPT | Indicator: None | Approval: UL, CSA | Note: NPT conduit version: replace first digit 3→1 (SPDT) or 4→2 (DPDT); Fluoro-rubber seal version: add -F suffix (temp range -10~+120°C) |
