![[MITSUBISHI ELECTRIC] — TH-N600 / TH-N600KP Thermal Overload Relay (250-660A, N600 Frame)](https://img.prosourcemro.com/2026/08/MSTN_photo_TH_1-1.png)
Thermal Overload Relays
MITSUBISHI ELECTRIC
[MITSUBISHI ELECTRIC] — TH-N600 / TH-N600KP Thermal Overload Relay (250-660A, N600 Frame)
Family ID: MEL-TH-N600
Mitsubishi Electric TH-N600 / TH-N600KP thermal overload relay for MS-T/N series magnetic contactors and starters, n600 frame, heater designations 250-660A. 2-element type for overload protection, KP 3-element (2E) type for combined overload and open-phase protection. Manual reset standard (auto-reset AR type available to order); auxiliary contact 1a1b. Compliant with JIS C8201-4-1, IEC 60947-4-1, EN 60947-4-1, GB 14048.4. Used in combination with separately sold Mitsubishi CW-type current transformers.
8 product codes available in this family
Product Codes & Specifications
| Product Code | Description | Brand | Spec | ||
|---|---|---|---|---|---|
| TH-N600 250A | TH-N600 thermal relay, 250A heater, 2-element | Mitsubishi Electric | Frame: N600 · Type: Thermal Overload Relay · Elements: 2-element · Protection: Overload · Heater: 250A (adjustable 200-300A) · Mounting: For magnetic starter combination · Reset: Manual (standard) · Aux Contact: 1a1b · Current Transformer: CW type, ratio 400/5A (sold separately) · Standards: JIS C8201-4-1, IEC 60947-4-1, EN 60947-4-1, GB 14048.4 | ||
| TH-N600 330A | TH-N600 thermal relay, 330A heater, 2-element | Mitsubishi Electric | Frame: N600 · Type: Thermal Overload Relay · Elements: 2-element · Protection: Overload · Heater: 330A (adjustable 260-400A) · Mounting: For magnetic starter combination · Reset: Manual (standard) · Aux Contact: 1a1b · Current Transformer: CW type, ratio 500/5A (sold separately) · Standards: JIS C8201-4-1, IEC 60947-4-1, EN 60947-4-1, GB 14048.4 | ||
| TH-N600 500A | TH-N600 thermal relay, 500A heater, 2-element | Mitsubishi Electric | Frame: N600 · Type: Thermal Overload Relay · Elements: 2-element · Protection: Overload · Heater: 500A (adjustable 400-600A) · Mounting: For magnetic starter combination · Reset: Manual (standard) · Aux Contact: 1a1b · Current Transformer: CW type, ratio 750/5A (sold separately) · Standards: JIS C8201-4-1, IEC 60947-4-1, EN 60947-4-1, GB 14048.4 | ||
| TH-N600 660A | TH-N600 thermal relay, 660A heater, 2-element | Mitsubishi Electric | Frame: N600 · Type: Thermal Overload Relay · Elements: 2-element · Protection: Overload · Heater: 660A (adjustable 520-800A) · Mounting: For magnetic starter combination · Reset: Manual (standard) · Aux Contact: 1a1b · Current Transformer: CW type, ratio 1000/5A (sold separately) · Standards: JIS C8201-4-1, IEC 60947-4-1, EN 60947-4-1, GB 14048.4 | ||
| TH-N600KP 250A | TH-N600KP thermal relay, 250A heater, 3-element 2E | Mitsubishi Electric | Frame: N600 · Type: Thermal Overload Relay · Elements: 3-element (2E) · Protection: Overload + Open-phase · Heater: 250A (adjustable 200-300A) · Mounting: For magnetic starter combination · Reset: Manual (standard) · Aux Contact: 1a1b · Current Transformer: CW type, ratio 400/5A (sold separately) · Standards: JIS C8201-4-1, IEC 60947-4-1, EN 60947-4-1, GB 14048.4 | ||
| TH-N600KP 330A | TH-N600KP thermal relay, 330A heater, 3-element 2E | Mitsubishi Electric | Frame: N600 · Type: Thermal Overload Relay · Elements: 3-element (2E) · Protection: Overload + Open-phase · Heater: 330A (adjustable 260-400A) · Mounting: For magnetic starter combination · Reset: Manual (standard) · Aux Contact: 1a1b · Current Transformer: CW type, ratio 500/5A (sold separately) · Standards: JIS C8201-4-1, IEC 60947-4-1, EN 60947-4-1, GB 14048.4 | ||
| TH-N600KP 500A | TH-N600KP thermal relay, 500A heater, 3-element 2E | Mitsubishi Electric | Frame: N600 · Type: Thermal Overload Relay · Elements: 3-element (2E) · Protection: Overload + Open-phase · Heater: 500A (adjustable 400-600A) · Mounting: For magnetic starter combination · Reset: Manual (standard) · Aux Contact: 1a1b · Current Transformer: CW type, ratio 750/5A (sold separately) · Standards: JIS C8201-4-1, IEC 60947-4-1, EN 60947-4-1, GB 14048.4 | ||
| TH-N600KP 660A | TH-N600KP thermal relay, 660A heater, 3-element 2E | Mitsubishi Electric | Frame: N600 · Type: Thermal Overload Relay · Elements: 3-element (2E) · Protection: Overload + Open-phase · Heater: 660A (adjustable 520-800A) · Mounting: For magnetic starter combination · Reset: Manual (standard) · Aux Contact: 1a1b · Current Transformer: CW type, ratio 1000/5A (sold separately) · Standards: JIS C8201-4-1, IEC 60947-4-1, EN 60947-4-1, GB 14048.4 |
