Phoenix CB TM1 Series: Industrial Circuit Breakers - Selection Guide
Product Overview
The Phoenix CB TM1 Series consists of compact industrial circuit breakers designed for overcurrent and short-circuit protection in control cabinets and automation systems. Covering current ratings from 1A to 8A, with three core trip curve variants (SFB/M1/F1) and standardized "P" configuration, these breakers feature DIN rail mounting and robust construction. Ideal for protecting sensitive electronic components, control circuits, and small industrial loads, they ensure reliable fault protection while maintaining space-saving design for dense cabinet layouts.
Model Quick Reference Table
1. 1A Current Rating
| Model No. |
Product Name |
Current Rating |
Trip Curve |
Key Features |
Application Scenarios |
| 2800836 |
CB TM1 1A SFB P |
1A |
SFB |
Standard "P" configuration |
Sensitive electronic circuits (low inrush current) |
| 2800847 |
CB TM1 1A M1 P |
1A |
M1 |
Standard "P" configuration |
General control circuits (moderate inrush) |
| 2800858 |
CB TM1 1A F1 P |
1A |
F1 |
Standard "P" configuration |
Fast-acting protection for precision electronics |
2. 2A Current Rating
| Model No. |
Product Name |
Current Rating |
Trip Curve |
Key Features |
Application Scenarios |
| 2800837 |
CB TM1 2A SFB P |
2A |
SFB |
Standard "P" configuration |
Low-power control modules and sensors |
| 2800848 |
CB TM1 2A M1 P |
2A |
M1 |
Standard "P" configuration |
Small relays and actuator control circuits |
| 2800859 |
CB TM1 2A F1 P |
2A |
F1 |
Standard "P" configuration |
Fast protection for delicate 2A-rated electronics |
3. 3A Current Rating
| Model No. |
Product Name |
Current Rating |
Trip Curve |
Key Features |
Application Scenarios |
| 2800838 |
CB TM1 3A SFB P |
3A |
SFB |
Standard "P" configuration |
Low-inrush 3A control circuits |
| 2800849 |
CB TM1 3A M1 P |
3A |
M1 |
Standard "P" configuration |
General-purpose 3A industrial load protection |
| 2800860 |
CB TM1 3A F1 P |
3A |
F1 |
Standard "P" configuration |
Fast-acting 3A electronic component protection |
4. 4A Current Rating
| Model No. |
Product Name |
Current Rating |
Trip Curve |
Key Features |
Application Scenarios |
| 2800839 |
CB TM1 4A SFB P |
4A |
SFB |
Standard "P" configuration |
Low-inrush 4A control systems |
| 2800850 |
CB TM1 4A M1 P |
4A |
M1 |
Standard "P" configuration |
Medium-load 4A actuator and relay circuits |
| 2800861 |
CB TM1 4A F1 P |
4A |
F1 |
Standard "P" configuration |
Fast protection for 4A precision electronics |
5. 5A Current Rating
| Model No. |
Product Name |
Current Rating |
Trip Curve |
Key Features |
Application Scenarios |
| 2800840 |
CB TM1 5A SFB P |
5A |
SFB |
Standard "P" configuration |
Low-inrush 5A industrial control circuits |
| 2800851 |
CB TM1 5A M1 P |
5A |
M1 |
Standard "P" configuration |
General 5A load protection (motors, pumps) |
| 2800862 |
CB TM1 5A F1 P |
5A |
F1 |
Standard "P" configuration |
Fast-acting 5A electronic equipment protection |
6. 6A Current Rating
| Model No. |
Product Name |
Current Rating |
Trip Curve |
Key Features |
Application Scenarios |
| 2800841 |
CB TM1 6A SFB P |
6A |
SFB |
Standard "P" configuration |
Low-inrush 6A control panels |
| 2800852 |
CB TM1 6A M1 P |
6A |
M1 |
Standard "P" configuration |
Medium-heavy 6A industrial load protection |
| 2800863 |
CB TM1 6A F1 P |
6A |
F1 |
Standard "P" configuration |
Fast protection for 6A sensitive electronics |
7. 8A Current Rating
| Model No. |
Product Name |
Current Rating |
Trip Curve |
Key Features |
Application Scenarios |
| 2800842 |
CB TM1 8A SFB P |
8A |
SFB |
Standard "P" configuration |
Low-inrush 8A control systems |
| 2800853 |
CB TM1 8A M1 P |
8A |
M1 |
Standard "P" configuration |
Heavy 8A load protection (industrial machinery) |
| 2800864 |
CB TM1 8A F1 P |
8A |
F1 |
Standard "P" configuration |
Fast-acting 8A electronic component protection |
Core Technical Specifications (Universal)
| Parameter |
Value |
Notes |
| Current Rating Range |
1A~8A |
Model-dependent, covers small to medium loads |
| Trip Curves |
SFB (slow), M1 (medium), F1 (fast) |
Matches different load inrush characteristics |
| Operating Voltage |
Up to 400V AC / 250V DC |
Compatible with industrial power systems |
| Breaking Capacity |
10kA (at 400V AC) |
High fault current handling capability |
| Mounting Type |
35mm DIN rail (NS 35/7.5) |
Compact design (width: 17.5mm) |
| Protection Class |
IP20 (cabinet mounting) |
Dust-proof for industrial control cabinets |
| Operating Temperature |
-25℃~70℃ |
Adapts to harsh industrial environments |
| Connection Type |
Screw terminals |
Accepts 0.5~2.5mm² conductors |
| Certifications |
CE, UL, CSA, IEC 60898-1 |
Global industrial compliance |
| Reset Type |
Manual |
Easy fault recovery after tripping |
Application Scenarios & Recommended Models
1. Sensitive Electronic Circuits (Low Inrush)
- Requirement: 2A protection for precision sensors and control modules
- Recommended Model: 2800837 (CB TM1 2A SFB P)
- Key Reason: SFB slow trip curve avoids false tripping from minor current fluctuations
2. General-Purpose Industrial Loads
- Requirement: 5A protection for relays, small motors, and pumps
- Recommended Model: 2800851 (CB TM1 5A M1 P)
- Key Reason: M1 medium trip curve balances inrush tolerance and fault protection
3. Fast-Acting Precision Equipment Protection
- Requirement: 3A fast protection for delicate electronic components
- Recommended Model: 2800860 (CB TM1 3A F1 P)
- Key Reason: F1 fast trip curve quickly cuts off current to prevent component damage
4. Heavy Industrial Machinery (8A Loads)
- Requirement: 8A protection for industrial machinery and heavy actuators
- Recommended Model: 2800853 (CB TM1 8A M1 P)
- Key Reason: M1 curve handles motor inrush; 10kA breaking capacity for severe faults
5. Low-Power Control Panels (1A~2A)
- Requirement: 1A protection for control panel electronics
- Recommended Model: 2800836 (CB TM1 1A SFB P)
- Key Reason: Compact size, SFB curve for stable protection of low-power circuits
Core Advantages
- Flexible Trip Curves: SFB/M1/F1 variants match diverse load inrush characteristics
- Wide Current Coverage: 1A~8A range fits small to medium industrial loads
- Compact Design: 17.5mm width saves control cabinet space for dense layouts
- High Breaking Capacity: 10kA at 400V AC handles severe fault currents
- Industrial-Grade Durability: -25℃~70℃ operating temperature, IP20 protection
- Easy Installation: DIN rail mounting and screw terminals simplify deployment
- Global Compliance: CE/UL/CSA certifications enable international use
Installation & Usage Notes
- Trip Curve Selection: Choose SFB for low-inrush electronics, M1 for general loads, F1 for fast precision protection
- Current Matching: Select rating slightly above normal operating current (avoid over-sizing)
- Wiring Specifications: Use 0.5~2.5mm² conductors; strip wires to 8mm and tighten terminals to 0.5~0.8Nm
- Mounting Spacing: Reserve ≥5mm between breakers for heat dissipation and operation space
- Voltage Verification: Ensure compatibility with system voltage (AC/DC) before installation
- Reset Operation: After tripping, identify and resolve fault cause before manual reset
- Environmental Protection: Install in dry, dust-free control cabinets (IP20 protection); avoid moisture exposure
