Catalogs > Safety Products Catalog > Safety Switches > Trapped Key Interlock Switches > Access/Chain Interlocks
Access/Chain Interlocks
Product Selection - Mechanical
| Type | Actuator Type | Trapped Key Condition | Cat. No. |
| Single key | Lever | Key trapped to release lever | 440T-MSALE10¬ |
| Chain | Key trapped to release chain | 440T-MSCLE10¬ | |
| Extended Lever | Key trapped to release lever | 440T-MSALE20¬ | |
| Single key with padlock hasp | Lever | Key trapped to release lever | 440T-MSALE11¬ |
| Chain | Key trapped to release chain | 440T-MSCLE11¬ | |
| Dual key | Lever | Primary key trapped, secondary key free to release lever | 440T-MDALE10¬ Ä |
| Both keys trapped to release lever | 440T-MDALE11¬ ¬ | ||
| Chain | Primary key trapped, secondary key free to release chain | 440T-MDCLE10¬ Ä | |
| Both keys trapped to release chain | 440T-MDCLE11¬ ¬ | ||
| Dual key with padlock hasp | Lever | Primary key trapped, secondary key free to release lever | 440T-MDALE45¬ Ä |
| Dual key with eject key | Lever | Primary key trapped, secondary spring eject key | 440T-MDALJ10¬ Ä |
| Chain | 440T-MDCLJ10¬ Ä | ||
| Triple key | Lever | One primary trapped, two secondary keys free to release lever | 440T-MTALE11¬ ÄÄ |
| Chain | One primary trapped, two secondary keys free to release chain | 440T-MTCLE11¬ ÄÄ | |
| ¬ Substitute the desired primary code for this symbol (key not included). See Key Coding for code selection. | |||
| Ä Substitute the desired secondary code for this symbol (key included). See Key Coding for code selection. | |||
Product Selection - Electrical
| Contact Type | Type | Actuator Type | Trapped Key Condition | Cat. No. |
| 2 N.C. & 1 N.O. break before make |
Dual Key | Lever | Both keys trapped to release lever | 440T-MDASE21¬ ¬ |
| Primary key trapped, secondary key free to release lever | 440T-MDASE20¬ Ä | |||
| Chain | Both keys trapped to release chain | 440T-MDCSE21¬ ¬ | ||
| Primary key trapped, secondary key free to release chain | 440T-MDCSE20¬ Ä | |||
| ¬ Substitute the desired primary code for this symbol (key not included). See Key Coding for code selection. | ||||
| Ä Substitute the desired secondary code for this symbol (key included). See Key Coding for code selection. | ||||