Mersen 6X32QC1 Miniature Fuse Block, 250VAC 15A Quick-Connect Terminals
The Mersen 6X32QC1 Miniature Fuse Block delivers reliable single-pole circuit protection rated 250 VAC at 15A, engineered for control panels and industrial equipment. Quick-connect terminals (1/4" and 3/16") allow fast, solder-free installation, while tin-plated copper contacts and a phenolic polyester body deliver long-term electrical integrity. This UL Recognized Component meets UL 4248-1 standards for dependable safety compliance.
Key Features
- Quick-Connect Terminals: 1/4" and 3/16" quick-connect terminals enable fast, secure connections without soldering.
- Durable Construction: Phenolic polyester body construction provides excellent electrical insulation and mechanical strength.
- Tin-Plated Copper Contacts: Corrosion-resistant contacts ensure long-term electrical integrity and low contact resistance.
- 250 VAC / 15A Rating: Handles standard commercial and residential voltage applications with reliable moderate-current protection.
- Single-Pole Design: One-pole configuration for straightforward circuit protection.
- Screw Mount Design: Secure mounting method ensures stable installation in panels and enclosures.
- UL Recognized Component: Meets UL 4248-1 standards for reliable safety compliance in electrical installations.
Certifications & Compliance
- UL Recognized Component to Standard 4248-1
Technical Specifications
- Number Of Poles: 1
Typical Applications
- Control Panel Circuit Protection
- Industrial Equipment Fusing
- Commercial Electrical Systems
- HVAC Control Circuits
- Motor Control Centers
- Instrumentation Protection
Why Mersen?
Mersen delivers proven reliability through UL Recognized Components meeting Standard 4248-1 requirements. The phenolic polyester construction and tin-plated copper contacts ensure long-term performance in demanding electrical applications, backed by professional-grade materials and manufacturing standards suited to control panel and industrial equipment fusing.
Manufacturer Resources
Mersen Product Catalog
Product Specs
- Product Type:
- Fuse Block
- Product Material:
- Phenolic Polyester
- Voltage Rating:
- 250 VAC
- Amperage Rating:
- 15A
- Connection Type:
- Quick-Connect
- Configuration:
- 1-Pole
- Listing:
- UL Recognized
- Standards:
- UL 4248-1
- Department:
- Electrical
- Product Group:
- Circuit Protection
- Product Subgroup:
- Fuse Holders & Blocks
- Number Of Poles:
- Single-pole
Mersen 6X32QC1 – Frequently Asked Questions
1) Can I use a Mersen 6X32QC1 fuse block on a 480V circuit?
No. The block tops out at 250 VAC, so it is limited to 120V and 240V class control and equipment circuits. For a 600V circuit you would move to a 600V block such as the Littelfuse LFR60030-3CID Class R or the LFG60015-1SQDINR Class G.
2) Do I need to solder or crimp lugs to wire a Mersen 6X32QC1 fuse block?
No soldering. The block uses quick-connect terminals in 1/4 inch and 3/16 inch sizes, so you push on standard female spade terminals crimped to your panel wire. That is what makes it quick to land in a control panel compared with a screw-terminal block.
3) What should I use instead of the Mersen 6X32QC1 if the panel needs a 600V Class G fuse holder on DIN rail?
The Mersen 6X32QC1 is a single-pole miniature fuse block rated 250 VAC at 15A with quick-connect terminals and a screw-mount body. For a 600V opening on DIN rail, the Littelfuse LFG60015-1SQDINR is a Class G fuse block rated 600V 15A with DIN rail mounting. Same 15A current, but a different fuse class, a higher voltage rating, and a rail-mount instead of screw-mount footprint, so the two are not physically interchangeable in a panel layout.
4) The 6X32QC1 is only 15A at 250V - what fuse block covers a 30A 600V branch instead?
The Mersen 6X32QC1 tops out at 15A and 250 VAC in a single-pole configuration, so it will not serve a 30A 600V circuit. The Littelfuse LFR60030-3CID is a Class R fuse block rated 600V 30A in a three-pole arrangement, which suits a three-phase 30A branch. Class R blocks also use rejection features that accept only Class R fuses, unlike the miniature fuse the Mersen block carries.
5) Can a Mersen 6X32QC1 be used on a solar DC string circuit?
No. The Mersen 6X32QC1 carries a 250 VAC rating and is intended for control panels, industrial equipment, and HVAC control circuits. Photovoltaic strings run at DC voltages well above that, and the part for that job is a PV-rated block such as the Bussmann CHPV2 series photovoltaic fuse block, a modular two-pole unit rated 1000 Vdc. The Mersen block is single-pole AC only and is not a substitute for it.
6) How many circuits does one Mersen 6X32QC1 protect?
One. It is a single-pole block holding a single fuse, so a three-phase or two-line circuit needs one block per pole. If you want a factory two-pole assembly instead, the Bussmann CHPV2 Series is a modular two-pole block, though it is a 1000 Vdc photovoltaic design rather than a 250 VAC control-panel part.
7) Is the Mersen 6X32QC1 fuse block UL listed for use in an equipment panel?
It is a UL Recognized Component to UL 4248-1, which is the fuseholder standard. Recognized means it is approved for use as a component inside listed end equipment, which is exactly how a control panel builder uses it. It is not a standalone UL Listed device.
8) Does the Mersen 6X32QC1 come with a fuse?
The 6X32QC1 is the block only. Order the miniature fuse separately, sized to your circuit and within the block's 250 VAC, 15A rating, along with female quick-connect terminals sized 1/4 inch or 3/16 inch to match the tabs.
9) If my control panel is built on DIN rail, is the Mersen 6X32QC1 still the right 15A block?
The Mersen 6X32QC1 is a screw-mount block, so it fastens to a subpanel or enclosure surface rather than clipping to rail. If the panel is standardized on DIN rail and you still need 15A, the Littelfuse LFG60015-1SQDINR is a 15A DIN rail mount block, though it is a 600V Class G device rather than a 250 VAC miniature fuse block. Match the mounting method to how the rest of the panel is laid out before choosing.
10) What is the difference between quick-connect terminals on the Mersen 6X32QC1 and a bolt-in fuse block?
The Mersen 6X32QC1 uses 1/4 inch and 3/16 inch quick-connect terminals, so wiring pushes on without soldering or torquing a lug - fast for control panel work and easy to service. The Littelfuse LD Series POWR-BLOKS fuse block uses bolt-in mounting instead, where the block and its connections are fastened down mechanically. Bolt-in is the usual choice for larger power feeders; quick-connect suits low-current control wiring like the 15A single-pole Mersen block.
11) I need two-pole protection - does the Mersen 6X32QC1 come in a multi-pole version?
The Mersen 6X32QC1 is a one-pole configuration, protecting a single circuit per block. For multi-pole work you either gang single-pole blocks or move to a multi-pole part: the Bussmann CHPV2 series is a modular two-pole block and the Littelfuse LFR60030-3CID is a three-pole Class R block at 600V 30A. Those peers carry different voltage and fuse-class ratings than the 250 VAC Mersen block, so confirm the circuit rating before swapping.
12) Will the Mersen 6X32QC1 hold up in a humid or industrial enclosure?
The body is phenolic polyester, which gives good dielectric strength and mechanical rigidity, and the contacts are tin-plated copper for corrosion resistance and low contact resistance. That combination is aimed at long service in control panels, HVAC control circuits, and motor control centers.
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Absolutely. The Mersen 6X32QC1 is backed by a manufacturer’s warranty.
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