Circuit Protectors
NC1V Circuit Protectors

Compact, Lightweight & High performance
IDEC’s original spring-up, fingersafe terminals enhance reliability and safety.
Features & Benefits
- Rocker type snaps into a panel.
- Rated voltage: 250V AC and 65V DC
- 35mm-wide DIN rail mounting (NH1V)
- Available with dual-coil.
- Available with auxiliary contact or alarm contacts.
- Available with inertia delay.
- Hydraulic-magnetic tripping system.
- Safe trip-free mechanism.
- Available in tab terminal and screw-terminal. This product is recognized by Underwriters Laboratories under UL1077 as a “Supplementary Protector.
NH1 Circuit Protectors

Hydraulic-magnetic tripping system
Wide range of applications from office automation and consumer use to factory automation.
Features & Benefits
- Available with inertia delay.
- Available with auxiliary contact or alarm contact.
- Safe trip-free mechanism.
- Vibration-proof design.
- Variety of mounting methods.
- IEC (IEC 60934) compliant.
- Available in tab-terminal and screw-terminal suited for crimping-terminal wiring.
NRA Circuit Protectors

Vibration Proof Design
Best selling circuit protectors. Wide selection of applications ranging from computers to office and factory automation.
Features & Benefits
- Available with inertia delay.
- Available with auxiliary contact or alarm contact.
- Hydraulic-magnetic tripping system.
- Safe trip-free mechanism.
- Vibration-proof design.
- Variety of mounting methods.
- IEC (IEC 60934) compliant.
NRBM Circuit Protectors

Compact Size
Variety of rated currents: 1A to 50A. Widely employed for protection of PC power circuits and large current circuits of welding machines.
Features & Benefits
- Electromagnetic trip, not affected by ambient temperature.
- Safe trip-free mechanism.
- Available with auxiliary contact and alarm contact.
- Available with inertia delay.
Type
Name
Downloads
NRF Circuit Protectors

IP20 degree of protection
Snaps into a 16-mm-diameter hole. Wide variety of applications such as office automation equipment.
Features & Benefits
- 16mm-dia fuse holder size.
- More than 1,000 repeat operations.
- Snap-on mounting.
- Visible trip indicator.
- Variety of rated currents.
NRL Circuit Protectors

Compact size (only 36.6H × 16.8W × 42Dmm)
Miniature circuit protectors with hydraulic-magnetic tripping system, allow for space and cost savings. Long life also reduces maintenance costs.
Features & Benefits
- One-lever (one-rocker) for 2-poles, ensures proper interruption to both poles when one pole is tripped.
- Low, middle, and high speed response.
- Variety of rated currents and internal circuits.
- Available with auxiliary contacts and inertia delay.
- Over 20,000 mechanical operations.
- Hydraulic-magnetic tripping system.
- Safe trip-free mechanism.
- Vibration-proof design.
NRP Circuit Protectors

Higher economic efficiency than a fuse
Mountable directly on PC boards with non-sealed and sealed types
Features & Benefits
- SIL subminiature circuit protectors adopting IC terminal arrangements, and mountable directly on PC boards.
- Simple construction and high performance applying a positive load reversing mechanism by IDEC’s original design.
- Unlike fuses, the thermal trip mode (bimetal) eliminates erroneous interruption due to inrush currents.
- Rated current can be selected to meet the load. Circuits with high inrush currents can be protected against overloads (unlike fuses).
- Reusable 200 operations (tripping at 200% the rated current) with higher economic efficiency, and less maintenance than fuses.
- Available in slim and flat styles. Slims (can be mounted on PC boards by using pick and place machines).
- Available in non-sealed and sealed types. With the sealed type, cleaning after soldering is possible.
- With a manual OFF mechanism, convenient for circuit checkups.