DIN-rail, IP20 finger-safe modular fuse holder for 10×38 mm cylindrical fuses: 1 – 4 poles, optional blown fuse indicator, UL + IEC approved, 200 kA SCCR.

Modulostar® CUS10 Modular Fuse Holders (10×38)
Mersen's Modulostar® CUS10 fuse holders are finger-safe under IEC standards to an IP20 degree of protection, including fuse changing — with the flick of a finger.
Available in 1, 2, 3 or 4 poles, with or without a visual blown fuse indicator, in a UL + IEC version. Multi-pole units can also be field-assembled with the pin-tie assembly kit. Made of tough, durable thermoplastic or thermoset material, for use with Mersen 10×38 (midget) fuses.
Applications: all circuits up to 690 V — protection of motors, transformers, low-voltage distribution, control circuits and drives. For non-load operation.
The list is taken from Mersen's current reference table; click a type code for the manufacturer's part page. Contact us for price and stock.
- Modular, compact design — saves panel space
- DIN rail mounting
- IP20, finger safe — easy access to the fuse
- Lockable without accessory — sealable in closed and open position
- Optional visual blown fuse indicator
- Multi-pole assembly kit
- Flame-retardant material — UL94 V2 (min.), glow-wire index 960 °C
- Railway material — R22HL2 option
- Tested for marine and railway — shock and vibration tests
Technical Specifications
| Rated voltage | 690 … 1000 V AC and 690 … 1000 V DC |
|---|---|
| Rated current | 32 A |
| Fuse size | 10×38 mm |
| Short-circuit current rating (SCCR) | 200 kA |
| Poles | 1, 1+N, 2, 3, 3+N, 4 (separate neutral module) |
| Wire size | 1 × 1 – 16 mm² rigid / multistrand · 2 × 6 mm² multistrand |
| Degree of protection | IP20 |
| Operating / storage temperature | -40 °C … +70 °C |
| Standards | UL 4248 (IZLT2), CSA C22.2, IEC 60269-2, IEC 60947-3 |
| Certificates | DNV, Lloyd's Register, CCC, KC, CE, RoHS, REACH, UKCA |
Product list
| Type | Mersen ref. | Poles | Indicator | Weight |
|---|---|---|---|---|
| CUS101 | G1062721 | 1-Pole | No | 0.045 kg |
| CUS101I | J1062723 | 1-Pole | Yes | 0.046 kg |
| CUS101N | C1062717 | 1-Pole+N | No | 0.095 kg |
| CUS101NI | E1062719 | 1-Pole+N | Yes | 0.095 kg |
| CUS102 | D1062718 | 2-Pole | No | 0.092 kg |
| CUS102I | F1062720 | 2-Pole | Yes | 0.093 kg |
| CUS103 | A1062715 | 3-Pole | No | 0.139 kg |
| CUS103I | B1062716 | 3-Pole | Yes | 0.14 kg |
| CUS103N | W1062711 | 3-Pole+N | No | 0.187 kg |
| CUS103NI | Y1062713 | 3-Pole+N | Yes | 0.188 kg |
| CUS104 | X1062712 | 4-Pole | No | 0.185 kg |
| CUS104I | Z1062714 | 4-Pole | Yes | 0.186 kg |
| CUS10N | H1062722 | Neutral | No | 0.048 kg |